73 results found for environment

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00:28:00

C60+ in space – a 28-year detective story about the Diffuse Interstellar Bands – Part 1

by John Maier
C60+ in space – a 28-year detective story about the Diffuse Interstellar Bands – Part 1
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 5774 views
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John Maier, Professor of Physical Chemistry at the University of Basel, describes the journey from the prediction of C60+ in 1987, through tentative assignment of its electronic spectrum by Radioastronomy, measurement in a neon-matrix and finally, in....

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00:31:00

The Origins of Cellular Life

by Jack Szostak
The Origins of Cellular Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1612 views
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The complexity of modern biological life has long made it difficult to understand how life could emerge spontaneously from the chemistry of the early earth. We are attempting to synthesize simple artificial cells in order to discover plausible pathwa....

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00:29:00

From Proto-oncogenes to Precision Oncology

by Harold Varmus
From Proto-oncogenes to Precision Oncology
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1814 views
Rating:

The diagnosis, classification, and treatment of human cancers are being transformed by scientific discoveries that were strongly influenced by the discovery of the c-src proto-oncogene, as described in the lecture by Michael Bishop. The path to this ....

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01:05:00

Continental loss: the quest to determine Antarctica’s contribution to sea-level change

by Matt King
Continental loss: the quest to determine Antarctica’s contribution to sea-level change
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1561 views
Rating:

For over 50 years scientists have been working to understand Antarctica’s contribution to sea level. For much of this time there has even been disagreement about if this massive ice sheet is growing or shrinking. In 2012, advances in data analysis....

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00:05:00

Fuel Cells – Main Aspects

by Alfonso Felipe
Fuel Cells – Main Aspects
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1397 views
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Fundamental aspects and properties of fuel cells in the environment of renewables.

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00:32:00

Cultural Values of Scientific Knowledge

by Werner Arber
Cultural Values of Scientific Knowledge
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 2868 views
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The acquisition of scientific knowledge largely depends on the availability of appropriate research approaches and methodologies. Novel scientific knowledge represents cultural values. On the one hand, it enriches our world-view with impacts on our....

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00:31:00

The Future of Life

by Christian de Duve
The Future of Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1349 views
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Ever since its first appearance, more than 3.5 billion years ago, life has evolved without guiding plan, propelled by: 1) its own intrinsic properties, which, with the help of outside energy, provided the necessary driving force; 2) accidental geneti....

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00:35:00

Updated Notions on Darwinian Evolution

by Werner Arber
Updated Notions on Darwinian Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1408 views
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Charles Darwin had based his theory of biological evolution on the observation that phenotypic variants of a given species can sometimes over-grow their parental population, and he attributed this to selective advantage, i.e., to the impact of natura....

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00:41:00

Climbing the Everest Beyond the Everest

by Ada Yonath
Climbing the Everest Beyond the Everest
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1724 views
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The challenges associated with pursuing ribosomal crystallography can be described as a series of Everest climbing. At each step, when reaching the summit, a taller and more difficult one became exposed. Snapshots of this story will be described.__....

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00:31:00

Biological Evolution in the Context of Cosmic Evolution and of Cultural Evolution

by Werner Arber
Biological Evolution in the Context of Cosmic Evolution and of Cultural Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1589 views
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After reconsidering the very long time periods in cosmic evolution, we will focus our attention to the evolutionary development of living organisms on our planet Earth. The genetic variants (mutations), which are occasionally produced, are alteratio....

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00:32:00

Man vs. Helicobacter _ The past 50,000 years and the next 50

by Barry Marshall
Man vs. Helicobacter _ The past 50,000 years and the next 50
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1622 views
Rating:

The epidemiology of Helicobacter pylori continues to be an area of discovery and controversy in the 21st century. The transmission of this bacterium from mother to child allows Helicobacter DNA to mimic the evolution of maternal mitochondria DNA. B....

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00:39:00

Molecular Catalysis for Green Chemistry

by Ryoji Noyori
Molecular Catalysis for Green Chemistry
for 18-22 and upwards,
Lectures | 18-22 and upwards | 9 years ago | 1355 views
Rating:

Science is inevitably intertwined with society.  The state of the art of science, coupled with industrial endeavors, has determined our quality of life.  Chemists are proud of their ability to generate high value from almost nothing by using accumu....

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