87 results found for biology

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00:12:00

‘Witch Weed’ – breaking the spell

by Various
‘Witch Weed’ – breaking the spell
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 2780 views
Rating:

Striga (witchweed) is a parasitic weed that seriously constrains the productivity of staples such as maize, sorghum, millet and upland rice on some farms in Uganda.  Kilimo Trust supported this initiative to try and control its spread.

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00:14:00

A biochemist investigating Parkinson’s Disease

by Birgit Liss
A biochemist investigating Parkinson’s Disease
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2010 views
Rating:

Dr Liss investigates Parkinson's disease with genetics

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01:12:00

A Worm’s Tale: Secrets of Inheritance and Immortality

by Craig Mello
A Worm’s Tale: Secrets of Inheritance and Immortality
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1783 views
Rating:

Intracellular synthesis is immensely fast and complex.

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00:10:00

Anti-oxidants

by Ryan Hill
Anti-oxidants
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1830 views
Rating:

Anti-oxidants and their importance in diet

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01:10:00

Bacterial cell walls, antibiotics and the origins of life

by Jeff Errington
Bacterial cell walls, antibiotics and the origins of life
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1247 views
Rating:

The cell wall is a crucial structure found in almost all bacteria. It is the target for our best antibiotics and fragments of the wall trigger powerful innate immune responses against infection. Surprisingly, many bacteria can switch almost effortl....

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00:11:00

Body Fuel for Long Distances

by Sarah Purcell
Body Fuel for Long Distances
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 13 years ago | 1644 views
Rating:

In my geoset project I will be discussing the effects of nutrition in long distance endurance. Topics include saturating carbohydrate stores before a race, the Krebs (citric acid) cycle, the effects of dehydration and hyponatremia, and replenishing y....

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00:05:00

Can the wheat which grows in dry areas solve the food crisis?

by Chiho Motokawa
Can the wheat which grows in dry areas solve the food crisis?
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1572 views
Rating:

Chiho describes her important work in looking for varieties of wheat which could help increase food production in arid areas.

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00:07:00

Cape Gannets

by Sarah Merrel
Cape Gannets
for 14-19 and upwards,
Undergraduate presentations | 14-19 and upwards | 13 years ago | 2011 views
Rating:

Study on Cape Gannets, a new prey for quickly adapting Great White Pelicans on Malgas Island, South Africa. First observed in 2008. Result of indirect human involvement; Cape Gannets should be reconsidered for conservation management.

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00:29:00

Cloning

by Various Presenters
Cloning
for 14-19 and upwards,
Discussions | 14-19 and upwards | 11 years ago | 14939 views
Rating:

Why is cloning such hot science? What are the potential benefits? And are there other ways of achieving them? What are stem cells, and why do many scientists say that embryonic cells are required for this work?

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01:04:00

Cloning, stem cells and regenerative medicine

by Ian Wilmut
Cloning, stem cells and regenerative medicine
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1200 views
Rating:

Extraordinary opportunities to study the molecular mechanisms that cause inherited diseases are being provided by new methods of producing stem cells. Hear about not only the potential value of these new methods, but also how their development was pr....

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01:14:00

Cuckoos and their victims

by Nick Davies
Cuckoos and their victims
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1305 views
Rating:

The sight of a little warbler feeding an enormous cuckoo chick has astonished observers since ancient times. It was once thought that cuckoos were unable to raise their own young because of defective anatomy and behaviour, and so other birds were onl....

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00:09:00

Curing Cancer with Bubbles – Fact or Fiction?

by Vanessa Hearden
Curing Cancer with Bubbles – Fact or Fiction?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1389 views
Rating:

Anti-cancer drug delivery with polymer bubbles.

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01:12:00

Darwin’s Four Great Books

by Edward Wilson
Darwin’s Four Great Books
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1797 views
Rating:

A lecture given as part of the Origins 09 series at Florida State University to celebrate the 150th anniversary of Darwin's 'On the Origin of Species'. Now in his 80th year, Alabama-born Edward Osborne (E.O.) Wilson has long enjoyed a reputation as ....

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00:04:00

David Attenborough on Darwin – Part 1

by David Attenborough
David Attenborough on Darwin – Part 1
for 14-19 and upwards,
Interviews | 14-19 and upwards | 14 years ago | 2245 views
Rating:

British broadcaster Sir David Attenborough presents his views on Charles Darwin, natural selection, and how the Bible has put the natural world in peril in an exclusive interview for Nature Video.

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00:33:00

Deep sea discoveries

by Jason Hall-Spencer
Deep sea discoveries
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 3371 views
Rating:

Recent underwater images show that the deep sea realm of the British Isles is nothing like the monotonous expanse of mud that many people imagine. Spectacular coral reefs, once thought to be restricted to the tropics, are now known to occur in the ch....

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00:05:00

Edmond Fischer

by Edmond Fischer
Edmond Fischer
for 14-19 and upwards,
Interviews | 14-19 and upwards | 15 years ago | 1984 views
Rating:

Winner of the Nobel Prize 1992 in Medicine / Physiology together with Edwin G. Krebs 'for their discoveries concerning reversible protein phosphorylation as a biological regulatory mechanism'

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00:10:00

Effects of high fat diet on bone quality etc.

by Jenna Stevens-Smith
Effects of high fat diet on bone quality etc.
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1208 views
Rating:

How a high fat diet can have a detrimental effect on our bones

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00:14:00

Entomologist

by Rob Hutchinson
Entomologist
for 14-19 and upwards,
Careers | 14-19 and upwards | 15 years ago | 11471 views
Rating:

Rob Hutchinson is an entomologist and one of the top mosquito experts in Europe whose work assesses the risk of Malaria returning to UK. He has developed a great interest in mosquito biology and did a masters degree at the School of Tropical Medicine....

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00:16:00

Everything we touch is dirty!

by Ana Lorena Morales Garcia
Everything we touch is dirty!
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1713 views
Rating:

Is food safe to eat if dropped on the floor for less than 5 seconds?

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00:30:00

Evolution and Creationism

by Adam Rutherford
Evolution and Creationism
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1465 views
Rating:

Dr Adam Rutherford investigates the idea that the teaching of evolution is being threatened by a rise in creationism amongst religious students.nRutherford speaks to the former Director of Education at the Royal Society, Reverend Professor Michael Re....

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00:05:00

Fibroblasts and Oesophageal Cancer

by Sam Beckett
Fibroblasts and Oesophageal Cancer
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 5029 views
Rating:

Does the anatomical source of fibroblasts affect their behaviour within a 3D composite model of oesophageal adenocarcinoma invasion?

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00:29:00

Flight in Birds and Aeroplanes

by John Maynard Smith
Flight in Birds and Aeroplanes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1673 views
Rating:

John Maynard Smith, one of our most eminent evolutionary biologists and scientific communicators originally trained as an engineer and spent the war years designing aircraft. He describes the way that flight developed in the animal kingdom. The fossi....

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00:21:00

Fred Sanger – Father of Molecular Biology

by Fred Sanger
Fred Sanger – Father of Molecular Biology
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 7245 views
Rating:

Fred Sanger is often considered the father of modern molecular biology, and is one of the few people to have been awarded two Nobel prizes. Working in Cambridge he developed a new chromatographic method for determining amino-acid end-groups. His n....

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00:47:00

From bench to bedside: KATP channels and neonatal diabetes

by Frances Ashcroft
From bench to bedside: KATP channels and neonatal diabetes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1482 views
Rating:

Whether you eat a whole box of chocolates or fast for the day, the pancreatic beta-cells ensure that your blood glucose level remains relatively constant by regulating the release of insulin from the pancreatic beta-cells. Diabetes results when insul....

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01:01:00

Genetic control and the mammalian radiation

by Duncan Odom
Genetic control and the mammalian radiation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1112 views
Rating:

To grow tissues in our body two key types of DNA control how, where and when to build essential proteins. Recent comparisons of mammal genomes show that instructions coding how to build proteins are similar across diverse species. In contrast the gen....

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01:07:00

Genetic fingerprinting and beyond

by Alec Jeffreys
Genetic fingerprinting and beyond
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1848 views
Rating:

Professor Jeffreys will describe how DNA typing can be used to solve casework and will review the latest developments, including the creation of major national DNA databases that are proving extraordinarily effective in the fight against crime.

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01:01:00

Genetic fingerprinting: past, present and future

by Alec Jeffreys
Genetic fingerprinting: past, present and future
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 8139 views
Rating:

Alec Jeffreys presents the origins of DNA fingerprinting through to the latest developments and their social impact

 

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01:09:00

Green Fluorescent Protein: Lighting up Life

by Martin Chalfie
Green Fluorescent Protein: Lighting up Life
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1470 views
Rating:

The accidental discovery of this wonderful tool has changed the face of biology.

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00:13:00

Green roofs

by Christine Thuring
Green roofs
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1451 views
Rating:

Using roof gardens to improve environment

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00:05:00

Growing gold-banded lilies with fungi

by Tomoha Miyazaki
Growing gold-banded lilies with fungi
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1469 views
Rating:

Tomoha describes her work in helping preserve this threatened species of plant.

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01:01:00

How embryos build organs to last a lifetime

by Brigid Hogan
How embryos build organs to last a lifetime
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1065 views
Rating:

All the organs of our body originate from small founder populations of cells which multiply into complex structures. ÊAdult stem cells are used to maintain organs throughout adult life and to repair or regenerate them after damage.Ê Focusing on the....

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00:07:00

Hydrogen fermentation with iron powders

by Yuto Yonebayashi
Hydrogen fermentation with iron powders
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1529 views
Rating:

How iron powder can catalyse bacterial production of hydrogen.

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00:59:00

In the Oceans

by Jacqui McGlade
In the Oceans
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1246 views
Rating:

Satellite, ship survey and computer modelling studies of the workings of the marine environment are used explore present fish supplies worldwide. The desperate need for global 'farming' strategies necessary to ensure that the Oceans can continue to p....

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01:34:00

Is biodiversity going the way of the Dodo?

by Various Presenters
Is biodiversity going the way of the Dodo?
for 14-19 and upwards,
Discussions | 14-19 and upwards | 11 years ago | 1647 views
Rating:

Panel discussion with Professor Jonathan Baillie, Dr William Cheung, Professor Adrian Lister and chaired by Dr Susan Lieberman, as part of the Royal Society Summer Science Exhibition 2011.  Right now one-fifth of the world’s vertebrates are classi....

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01:01:00

Is the Great Barrier Reef on Death Row?

by Charlie Veron
Is the Great Barrier Reef on Death Row?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1821 views
Rating:

Professor J.E.N Veron, the former Chief Scientist of the Australian Institute of Marine Science and widely regarded as the world's leading authority on coral reef ecosystems, presents the effects that climate change is having on coral reefs.

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00:03:00

Is there life in your PC?

by Norman Billingham
Is there life in your PC?
for 14-19 and upwards,
Discussions | 14-19 and upwards | 8 years ago | 1494 views
Rating:

What is there in your computer which is attractive to bacteria and fungi?

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00:29:00

John Cornforth

by John Cornforth
John Cornforth
for 14-19 and upwards,
Interviews | 14-19 and upwards | 15 years ago | 2190 views
Rating:

Video of John 'Kappa' Cornforth who was born in Australia, and has been profoundly deaf since his teens. He moved into the field of organic chemistry at Sydney University where he met his wife Rita. Together they moved to Oxford and had a profound in....

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00:25:00

Lighting up cells

by Guiseppe Battaglia
Lighting up cells
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1436 views
Rating:

A presentation about fluorescing cells by a Senior Lecturer in Bionanotechnology in the Department of Biomedical Science at the University of Sheffield

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01:17:00

Mammalian biodiversity: past, present, future?

by Andy Purvis
Mammalian biodiversity: past, present, future?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1302 views
Rating:

Beautiful and charismatic, mammals are biodiversity icons. But a quarter of mammalian species are now threatened with extinction, as ecosystems reel under the impact of a growing and ever more demanding human population. This lecture explores the his....

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00:52:00

Max Perutz Interview – 2

by Max Perutz
Max Perutz Interview – 2
for 14-19 and upwards,
Interviews | 14-19 and upwards | 15 years ago | 1967 views
Rating:

The concluding part of an interview with the 1962 Nobel Laureate in Chemistry.

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00:15:00

Medicine and the evolution of altruism

by James Marshall
Medicine and the evolution of altruism
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 5278 views
Rating:

Why altruism is necessary for survival

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00:11:00

Mitochondrial DNA Testing

by Jessica Moore
Mitochondrial DNA Testing
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1727 views
Rating:

How the testing of mitochondrial DNA has revolutionised genetic tracing

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01:04:00

Nature’s glass: half-full or half-empty?

by Andrew Balmford
Nature’s glass: half-full or half-empty?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1516 views
Rating:

Andrew Balmford FRS is Professor of Conservation Science at University of Cambridge.  The world’s governments failed to meet their pledge of reducing the rate of biodiversity loss by 2010. Wild populations, their habitats, and the benefits they pr....

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00:02:00

Nerve tissue engineering

by John Haycock
Nerve tissue engineering
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 3121 views
Rating:

Research staff explain how they are developing nerve guidance channels for repairing peripheral nerve injury

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00:12:00

Neurochemistry

by Kelly Kibbey
Neurochemistry
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1431 views
Rating:

A presentation on neurochemistry - the effects of drugs and nutrition are also discussed.

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01:02:00

NeuroNavigation: how the brain represents the space we live in and finds our way around

by John O'Keefe
NeuroNavigation: how the brain represents the space we live in and finds our way around
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1560 views
Rating:

Learning about new environments or locating ourselves in familiar environments are some of the most fundamental tasks that the brain performs. Information is not stored in response to biological needs such as hunger or thirst but on the basis of cogn....

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00:07:00

Nobel Laureate Venki Ramakrishnan

by Venki Ramakrishnan
Nobel Laureate Venki Ramakrishnan
for 14-19 and upwards,
Interviews | 14-19 and upwards | 14 years ago | 1924 views
Rating:

Venki Ramakrishnan was awarded the 2009 Nobel Prize in Chemistry for 'studies of the structure and function of the ribosome', the cell's protein-making factory. In this interview, he talks about his surprise at winning the prize, and what it meant to....

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01:08:00

Nobel Lives

by Sidney Brenner
Nobel Lives
for 14-19 and upwards,
Discussions | 14-19 and upwards | 11 years ago | 3183 views
Rating:

An audience with Nobel prize winners John Sulston FRS and Sydney Brenner FRS, who talk to Sarah Montague of BBC Radio 4's Today Programme, about their lives in science and their visions for the future.

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