INVESTIGATE

Ed Smylie, Who Saved the Apollo 13 Crew With Duct Tape, Dies at 95

Richard L. Garwin, a Creator of the Hydrogen Bomb, Dies at 97

Interior Department Weighs Less Conservation, More Extraction

1 Astronaut, Many Cameras and 220 Days of Amazing Images From Space

In Their Final Moments, a Pompeii Family Fought to Survive

Soviet Spacecraft Crash Lands on Earth After a Journey of Half a Century

The Best Way to Drop an Egg

A Half-Ton Spacecraft Lost by the Soviets in 1972 Is Coming Home

How Trump’s Cuts Are Stifling L.G.B.T.Q. Health Research

Volcanic Eruption in Deep Ocean Ridge Is Witnessed by Scientists for First Time

The Physics of the Perfect Pour Over

It’s Springtime on Polaris-9b, and the Exoflowers Are Blooming

How to Evade Taxes in Ancient Rome? A 1,900-Year-Old Papyrus Offers a Guide.

A Self-Made Space Historian Is Stepping Into the Role Full Time

The Skin on Mysterious Medieval Books Concealed a Shaggy Surprise

King K. Holmes, 87, Dies; Researcher Destigmatized Study of S.T.I.s

Ideology May Not Be What You Think but How You’re Wired

SpaceX Astronauts Splash Down Off California Coast for the First Time

The Very Territorial Caterpillar

One Bird Nest, 30 Years of Human Trash