Biology

Men over 50 need twice the exercise for same heart benefits as women.

Men over 50 may need twice the exercise as women for the same heart health benefits, a study suggests.

Music engagement linked to lower dementia risk

Music engagement linked to lower dementia risk.

Dusky sharks kill swimmer in rare attack.

Dusky sharks, typically harmless, killed a swimmer in the Mediterranean in a rare attack linked to human interaction.

North American bats glow under UV light

North American bats glow under UV light, study finds.

Putin’s 150-year lifespan claim meets science reality.

Putin’s claim of organ transplants extending life to 150 meets scientific reality.

APOE4 gene disrupts brain energy, links to Alzheimer’s

APOE4 gene variant disrupts brain energy balance, linking to Alzheimer’s.

Study: Jealousy responses vary by sex and orientation.

Men upset by sexual betrayal, women by emotional. Attraction and masculinity matter.

Gut microbes influence calorie absorption

Gut microbes producing methane may help extract more calories from high-fiber diets, a new study finds.

'Tech neck' hazard for young smartphone users

Study links heavy smartphone use to "forward head posture" in young adults, increasing spinal strain.

Lower-income couples show more heart rate sync

Lower-income couples' heart rates sync more during conversations, study finds.