Scientific American

The signature of Sak Tahn Waax, or “White-Chested Fox,” was found inscribed in a 1,000-year-old chamber beneath present-day Guatemala spklr.io/6019EPT1x

Record-breaking heat waves are beginning to blur together—here’s why and what’s making them so unbearable spklr.io/6013EPrl9

Hundreds of thousands of scientists, including Nobel laureates, warn that changes to the way federal grants are approved would greatly damage American science spklr.io/6015EPrX3

Erythrulose—a sugar found in raspberries—is also prevalent in a giant molecular cloud close to our galaxy’s core, scientists have discovered spklr.io/6010EPRem

A 23-year-old student overturned an ancient conjecture about one of math’s simplest operations spklr.io/6016EPRB0

Bacteria send protein packages to dormant neighbors to endure antibiotic attack spklr.io/6015EPuWx

Alpha-gal syndrome is increasing across the U.S., driven by lone star ticks spklr.io/6015EP3kU

The sheer amount of insects that free-range cats consume might surprise you spklr.io/6019EP3nJ

An ancient sample shows calcite threading through the material’s cracks and pores, with possible lessons for making modern concrete last longer spklr.io/6014EPKII

Tennis players can return high-speed balls using a combination of reaction and predicting the future spklr.io/6017EPKn7

The inaugural launch and first-stage booster recovery of China’s Long March 10B rocket intensifies the nation’s spaceflight rivalry with the U.S. spklr.io/6010EPHlk

The climate system is tied to more powerful typhoons, as well as famine and wildfires. spklr.io/6016EPHe2

A proposed rule change could expose more Americans to higher doses of radiation from nuclear facilities spklr.io/6013EPHbl

Efforts to revive the thylacine and woolly mammoth are forcing conservationists to face a long-overdue debate over what kind of natural world we want to build spklr.io/6016EPGem

Other planets have moons, too. Do they get eclipses like we do? spklr.io/6016EPGdI

A strange class of comet could explain the enigmatic behavior of ‘Oumuamua, the first known interstellar object—and even shed light on how Earth became habitable spklr.io/6011EPGrf

A recent study in the journal Nature carries cosmos-quaking implications for our understanding of the universe—except a new preprint says that it’s wrong spklr.io/6019EPDiN

Living at altitudes with less than half the oxygen at sea level, these mice have adapted to their environment in unique ways spklr.io/6010EPD9r

Case numbers have skyrocketed from several dozen nationwide in June to more than a thousand in the state of Michigan alone spklr.io/6019EPDrl

New research identifies five distinct sleep subtypes, revealing links between brain patterns, behavior and health spklr.io/6016EP8KO