All Stories

Life

Planets with hydrogen skies could harbor life

Microbes can live in a hydrogen atmosphere. This points to new space worlds that host alien life.

Animals

When prey get scarce, these jellies become cannibals

Invasive comb jellies may feast on their larvae if massive population booms in summer deplete their prey.

Health & Medicine

Scientists Say: Protein

Proteins are molecules made up of building blocks called amino acids. They play many key roles in the body’s cells and are essential for life.

Earth

Fossil fuels appear to release far more methane than we thought

Ice cores reveal less methane than expected. This suggests today’s fossil fuel industry is responsible for nearly all of the methane emissions from natural sources today.

Humans

Skeletons hint that ancient societies had women warriors

Some women in North American hunter-gatherer societies and Mongolian herding groups may have been warriors.

Environment

CO₂ emissions have nosedived as COVID-19 keeps people home

The COVID-19 pandemic restricted travel that can pollute the air. By April, travel-related daily emissions of greenhouse gases was back to 2006 levels.

Planets

Let’s learn about Jupiter

This gas giant is home to a massive storm that has lasted hundreds of years. It’s also surrounded by dozens of moons.

Chemistry

Ancient recipes helped scientists resurrect a long-lost blue hue

Led by medieval texts, scientists hunted down a plant and used its fruit to make a blue watercolor with mysterious origins.

Physics

Scientists Say: Momentum

This word describes a property of a moving object based on its mass and the direction and speed of its motion.

Chemistry

Let’s learn about bubbles

Bubbles are a great way to while away a beautiful summer day. Knowing a bit of science can help you blow the biggest and the best bubbles.

Health & Medicine

Our gut microbes love a good workout

Technology shows how microbes in the body respond to exercise. That helps scientists understand why those microbes keep athletes healthy.

Health & Medicine

Sweat tech alerts athletes when to rehydrate — and with what

Technology shows how the body responds to moderate and vigorous exercise. That helps athletes stay healthy — and helps scientists understand why.