From blaming the victim to replying "I have no interest in your life" to suicidal thoughts, AI chatbots can respond unethically when used for therapy.

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Mosquitoes have reached Iceland, a place once thought too harsh for them to survive. Climate change may play a role in this shift.

A safety device helped maintain a buried person’s oxygen levels for up to 35 minutes, tests show, buying crucial time for an avalanche rescue.

A type of Japanese dogsbane releases a scent identical to wounded ants’ distress signal, drawing in scavenging flies that unwittingly pollinate it.

Theoretical physicist Alex Lupsasca is pushing for a space telescope to glimpse the thin ring of light that is thought to surround every black hole.

Cancer patients who got an mRNA COVID vaccine within a few months of their immunotherapy lived longer than those who did not, health records show.

The open-source AI model improves transparency in predicting how proteins interact with other molecules, which could speed up drug discovery.

A new study shows how much food polar bears leave behind — and how their decline threatens scavengers across the Arctic.

The story of Atlantic hurricanes is treading a familiar — and frightening — path: Climate change is fueling huge, slow-moving, rain-drenching storms.

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

An AI tool trained on chemical signatures from corpse-eating insects may help determine time and place of death for victims of violent crimes.