Posts

Showing posts from January 8, 2019

Carbon emissions up as Trump rolls back climate change work

Image
The Guardian A coal plant in Wisconsin. US Geological Survey. Last year’s 3.4% jump in emissions is the largest since 2010 recession and second largest gain in more than two decades. More here.

Could genetic modification be about to give a boost to the war on hunger?

Image
by Larry Powell A vegetable garden in Manitoba. A  PinP  photo. American researchers believe they've found a way to genetically-engineer a dramatic increase in crop production. They've conducted field experiments with tobacco, using a new method which makes the critical process of photosynthesis much more efficient.  (Tobacco was chosen because it's easy to modify and test. The same methods are now being tested on other crops including soybean, potato and tomato.)  Photosynthesis allows plants to convert sunlight into energy and help them grow, increasing crop yield. To do this, most plants use the world's most plentiful enzyme, Rubisco, to capture carbon dioxide from the air and expel oxygen. But in a strange twist of nature, Rubisco captures more oxygen than it should. This produces a toxic compound in the plant which requires a lot of energy to get rid of. It could take more than a decade before this new technology can be put into widespread use