A gaunt, 92-year-old man in a wheelchair sunbathes in a narrow courtyard, motionless, his eyes closed. Nearby, a few dozen other elderly men with short grey hair exercise slowly as an instructor gently calls out, "Don't strain yourselves."
If you’re one of the millions of people concerned about the growing pressures that our food habits are placing on the environment, then you’ve probably felt confused, conflicted or downright overwhelmed by your own food choices on more than a few occasions.
One of the recurring media narratives about the nature of science today is that it is ‘broken’ or ‘in crisis’. In the mainstream press, some stories about the failure to reproduce study results or the rising retraction rate or incidents of scientific fraud have been accompanied by assertions about a ‘systemic crisis’ in areas of science — or in science itself.
A study out March 13 finds that urban trees can survive increased heat and insect pests fairly well — unless they are thirsty. Insufficient water not only harms trees, but allows other problems to have an outsized effect on trees in urban environments.