Pausing the J&J Vaccine Was Easy. Unpausing Will Be Hard

Pausing the J&J Vaccine Was Easy. Unpausing Will Be Hard

Despite the hastily called press conference on Tuesday, the late-night meetings, and the growing worry over a potentially fatal side effect, the decision to pause the use of one of the three Covid-19 vaccines available in the United States was a relatively easy one.

The Anthropause: How the Pandemic Gives Scientists a New Way to Study Wildlife

The Anthropause: How the Pandemic Gives Scientists a New Way to Study Wildlife

Some cities may have restricted driving, while others didn’t—researchers can look at both traffic and animal data to see how species in different areas adapted.

Whales Help Explain the Evolutionary Mystery of Menopause

Whales Help Explain the Evolutionary Mystery of Menopause

A paper in PNAS reports evidence that supports this explanation, showing that killer whale grandmas who have stopped reproducing do a better job of helping their grandchildren to survive than grandmothers who are still having babies of their own.