Before Russia invaded Ukraine, many military analysts feared that the capital of Kyiv would fall within days of an attack, undermining any further resistance. Instead, the war is well into its second ...

For the first time ever, the James Webb Space Telescope has discovered an exoplanet by directly imaging it. The newfound world has a mass roughly similar to Saturn and orbits inside the debris disk ...

Lab experiments suggest mosquitoes can smell DEET and learn to associate it with food, but it’s unclear whether that happens ...

How animals navigate by Earth's magnetic field is hotly debated. New research in pigeons points to iron-laden liver immune ...

Self-driving cars promise to transform roadways. There’d be fewer traffic accidents and jams, say proponents, and greater mobility for people who can’t operate a vehicle. The cars could fundamentally ...

Signs of water plumes spewing from Jupiter’s icy moon Europa have vanished in a hydrogen haze. An analysis of nearly a decade of Hubble Space Telescope observations of Europa shows no strong evidence ...

The South Pacific blast may have consumed its own methane — but using this idea against the greenhouse gas is controversial.

The new test may catch active tuberculosis in those with low access to health care or who have trouble making the phlegm ...

The biggest beasts to walk the Earth had humble beginnings. The first dinosaurs were cat-sized, lurking in the shadows, just waiting for their moment. That moment came when four major pulses of ...

When sea level drops far below the present-day level, the island volcano Santorini in Greece gets ready to rumble. A comparison of the activity of the volcano, which is now partially collapsed, with ...

An ocean current called the Atlantic Meridional Overturning Circulation will weaken by 50 percent by 2100. The question is ...

Scientists rethink their ideas after experiments. AI agents struggle to learn from evidence and recognize when an idea is ...