Massive study looked at more than half a million trees in 813 forests across the tropics.

Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.

Thinking of SARS-CoV-2 as an invisible enemy with an evil personality and humanlike motivations is a natural offshoot of the way people evolved to anthropomorphize so as not to overlook threats.

Fear of flying means something altogether different in the age of the new coronavirus. Now the biggest concern is how to keep from becoming infected. If you must fly, here are some things to consider.

Over the first 100 days of the pandemic, countries that quickly implemented strong policies successfully lowered their death rates faster. There were also some surprises in the successes and failures.

There comes a point when we just have to let it go and give up control.

It's hard to eat while wearing a face mask, and social distancing isn't easy in restaurants' normally tight quarters. An infectious disease expert offers some tips on what to look for to stay safe.