e5 How I’ll decide when it’s time to ditch my mask For weeks, I have been watching coronavirus cases drop …
d4 50 years ago, scientists thought a desert shrub might help save endangered whales The sperm whale is an endangered species. A major reaso…
c3 Lost genes may help explain how vampire bats survive on blood alone Surviving on blood alone is no picnic. But a handful of…
b2 How a virus turns caterpillars into zombies doomed to climb to their deaths Higher and higher still, the cotton bollworm moth cater…
a1 Social mingling shapes how orangutans issue warning calls Human language, in its many current forms, may owe an e…
e5 New images reveal details of two bacteria’s molecular syringes Some bacteria carry tiny syringes filled with chemicals…
d4 Invasive jorō spiders get huge and flashy — if they’re female Some thumbnail-sized, brown male spiders in Georgia cou…
c3 How scientists found an African bat lost to science for 40 years Julius Nziza still remembers the moment vividly. Just b…
b2 ‘Vagina Obscura’ shows how little is known about female biology More than 2,000 years ago, Hippocrates, the Greek physi…
a1 Wally Broecker divined how the climate could suddenly shift It was the mid-1980s, at a meeting in Switzerland, when…