Investigate

Napoleon Chagnon, 81, Controversial Anthropologist, Is Dead

SpaceX Unveils Silvery Vision to Mars: ‘It’s Basically an I.C.B.M. That Lands’

Elon Musk to Deliver SpaceX Starship Presentation

There Are Parasitic Wasps, and Then There’s the Crypt-Keeper

Joachim Messing, 73, Who Charted the DNA of Viruses and Plants, Dies

How Blink-182’s Tom DeLonge Became a U.F.O. Researcher

Cats Like People! (Some People, Anyway)

Where Theory Meets Chalk, Dust Flies

It’s a Dirty Job, but Someone Has to Do It and Not Get Eaten

The Most Powerful Lightning Bolts Strike in Unexpected Places

Hurricanes May Kill Some Birds, but Humans Are the Real Threat

Weather Radars Reveal an 80 Percent Chance of ... Dragonflies?

Beekeepers Confront the E.P.A. Over Pesticides