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Despite millions of years of evolutionary separation and a geographical divide, a blue jay and green jay mated in Texas. This bird is the result.

Digital reconstruction of a partially crushed skull suggests new insight into Homo sapiens’ evolutionary relationship to Denisovans and Neandertals.

The effectiveness of camouflage or warning colors for insect defense depends on conditions such as light levels and how many predators are around.

Emotional events help solidify memories. The findings may one day help students study or trauma survivors recover.

Scientists have filmed nanoscale ice crystals adapting to trapped air bubbles without losing structural integrity.

The FDA plans to add a warning to Tylenol’s label and OK use of a drug for autism. Researchers say there’s little data to support either move.

Building blocks of life have been found on this moon of Saturn. They may come from chemical reactions beyond Enceladus’ possible life-supporting ocean.

Seismic and land deformation data show that Santorini and Kolumbo draw from the same magma source, complicating eruption forecasts.

Calcium, a mineral involved in wound healing, can strengthen the attachment between microbe and skin and make infections hard to shake.

Event Horizon Telescope data reveal the magnetic field around M87* shifted, weakened and then flipped, defying theoretical expectations.

Diagnoses for several cancers before age 50 have been increasing rapidly since the 1990s. Scientists don’t know why, but they have a few suspects.