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This sulfurous hell world might change the way we classify exoplanets

An oddity among exoplanets, L 98-59 d is (so far) in a class all its own, but astronomers expect powerful new telescopes will eventually reveal more like it

Inside NASA’s ‘very ambitious’ moon base plan

NASA's moon exploration plans call for nearly 80 launches, nearly 75 landers, 10 moon buggies and one nuclear reactor

Tanking is ruining NBA basketball. Can math save it?

Several teams appeared to spend the second half of the U.S. professional basketball season losing games on purpose for a better chance at a high draft pick. New ideas propose to fix this incentive problem

Trump Plans to Fire F.D.A. Commissioner Marty Makary

CHRISTINA JEWETT AND MAGGIE HABERMAN

Dr. Makary has been a supporter of the Make American Healthy Again Movement but made some enemies in the administration over vaping, the abortion pill and rejections of new drugs.

A Single Infusion Could Suppress H.I.V. for Years, Study Suggests

APOORVA MANDAVILLI

A study of a few patients, to be presented this week, showed promise for a type of therapy that has already cured some blood cancers.

See the National Park Service’s newest canine rangers

Sled dogs have worked alongside humans for thousands of years. In the harsh Alaskan winter they remain the best option for traversing the snowy landscape

Protein-boosted foods are everywhere now, but do we actually need more protein?

Extra protein can be found in everything now, from potato chips to Pop-Tarts. Does this benefit the average eater?

A Fish That Hitches Rides Where the Sun Doesn’t Shine

JASON BITTEL

The remora often latches on to the exteriors of larger marine creatures. But sometimes it travels in a more intrusive spot: inside a manta ray’s backside.

Kennedy Is Driving a Vast Inquiry Into Vaccines, Despite His New Silence on the Issue

CHRISTINA JEWETT AND SHERYL GAY STOLBERG

Health Secretary Robert F. Kennedy Jr. has toned down his public criticism of vaccines, under orders from the White House. But inside his department, a sprawling research effort is a top priority.

Sucker fish are hiding in manta rays’ ‘butthole,’ new study reveals

The practice of "cloacal diving" could help remoras hide from predators—it could also be a feeding strategy or help the fish hitchhike

Strange crystals found inside wreckage from the first nuclear bomb test

The Trinity bomb test left behind a unique form of matter, and now, scientists have discovered a new chemical structure inside it

Trump Nominates Cameron Hamilton to Lead FEMA

SCOTT DANCE

President Trump chose Cameron Hamilton to direct federal disaster response. As acting head of FEMA last year, he had opposed abolishing the agency and was ousted.

Is the U.S. in a new era of political violence? Experts say it’s complicated

Researchers who study political violence say that the U.S. is in a period of more intense political rhetoric, but there have been far darker periods in the nation's history

Gemstones on Mars—why the Red Planet could be harboring rubies, opals, and more

NASA's Mars rovers have found traces of minerals akin to those that make up precious gems on Earth. But their appearance and abundance on Mars is likely very different, experts say

NASA’s Apollo moon missions relied on this computer scientist and differential equations

Margaret Hamilton designed safety features for NASA inspired in part by her four-year-old