410 search results

Dr Jean-Francois Soussana - Stories of Change
Nature & Environment

Dr Jean-Francois Soussana - Stories of Change

...Carbon Project) and to scientific expertise for FAO. He has coordinated research projects on climate change and agriculture and currently leads a large European (FP7) project on livestock and climate change involving four continents. J-F Soussana has also chaired a national scientific committee on ‘Ecosystems and Sustainable Development’ for the French national...
Climate change and renewable energy
Nature & Environment

Climate change and renewable energy

...carbon dioxide. They are normally present only in small amounts, but their impact is very significant. Greenhouse gases in the atmosphere are largely ‘transparent’ to most regions of the spectrum of the incoming solar radiation, such as the visible and ultraviolet, but they intercept the outgoing infra-red radiation from the Earth by absorbing it and then emitting it...
Plasma nitriding/carburising
Science, Maths & Technology

Plasma nitriding/carburising

...carbon atoms (carburising plasma) or nitrogen atoms (nitriding plasma). Carburising, carried out at high temperatures, involves bombarding the surface to be coated with the plasma. The workpiece is held under vacuum until carbon atoms have diffused into the heated surface, to form hardened surface layers on quenching. Nitriding is carried out under vacuum, but without...
Deep oceans can help us understand our climate
Nature & Environment

Deep oceans can help us understand our climate

Carbon isotopes found in deep water fossils offer an insight into deep ocean circulation says PhD student, Andrew McIntyre. ...[A view of Hout Bay in Kommetjie, South Africa] A view of Hout Bay in Kommetjie, South Africa There is approximately 60 times more carbon in the deep ocean than in the atmosphere. Therefore, understanding the deep ocean is of critical...
Tim Lenton - Stories of Change
Nature & Environment

Tim Lenton - Stories of Change

...carbon stored and that was simply we wanted to look but it’s only recently we’ve had the funding and had the initiatives to really begin to get good coverage of this incredibly important part of the climate system. RH: And how much did that lack of knowledge contribute to us being caught out. I think you’d agree we were caught out by the pause. TL: I would say that...
Pain and Aspirin
Science, Maths & Technology

Pain and Aspirin

...carbon, two for oxygen and one for hydrogen). If any atoms have the wrong valency, it follows that there is a mistake somewhere and the molecule does not exist as drawn. It looks OK for the structure of salicylic acid. You probably noticed that some of the carbon atoms have two bonds joining them to another atom. These are called double bonds and they contain four...
Level 2: Intermediate 4 hrs
The ISIS winter: The environmental impact of Middle East conflict
Nature & Environment

The ISIS winter: The environmental impact of Middle East conflict

...footprint in its wake — a footprint that will hinder reconstruction efforts and have long-term health and economic consequences for communities. "The most important feature of this effort is to create a monitoring model that can provide data on the environment, not only after the conflict but also during it, making decision makers more capable of and competent to take...
How do fire controls harm biodiversity?
Nature & Environment

How do fire controls harm biodiversity?

...carbon dioxide absorbed in different areas of a small city in El Cerrado the commune Aguas de Santa Barbara. They confirmed that a policy banning human-caused fires between 1986 and 2015 encouraged the growth of denser forest. This led to an increase, by 1.2 tons, of the carbon stored in both vegetation and soil in those areas since 1986. But at the same time, they found...