Agave uses a turbocharged version of photosynthesis that works in even the driest spots. As climate change threatens our food supply, the race is on to harness its power in more resilient crops.

 

Coffee is no good for you – that’s the received wisdom, at least.

 

Coffee has long been a friend of students working through the night, but it does more than just keep us awake. A study provides the first convincing evidence that caffeine enhances long-term memory in people – provided the dose is right.

 
 
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