Kate Baggaley

Even if you’re trying to maximize your workout, we naturally tend to run at paces that use as little energy as possible.

A 2019 marine heat wave triggered a mass bleaching event, but coral havens in cleaner waters further from humans had fewer casualties.

Fossils of feathery-looking sea creatures that formed prehistoric animal communities give clues to the ‘Cambrian explosion’ of evolution.

New evidence shows that some dinosaurs had much faster metabolisms than others, giving new insights into the evolution of warm-bloodedness.

Megalodon and great white sharks may have eaten the same prey animals millions of years ago, according to a new study of their teeth.

Remains of those who died of ‘pestilence’ in the 14th century contain evidence they were infected with plague bacteria.

A newly discovered population of polar bears uses freshwater ice flowing from glaciers for hunting grounds in the warming Arctic.

A multi-step experiment on a small group of mice, mosquitoes, and people shows that dengue and Zika change the host’s scent through skin bacteria.

Sales of emergency contraceptives have spiked since the end of Roe v. Wade, but health experts caution against stockpiling.

The best health innovations of 2022 include bivalent COVID vaccines, a new HIV stem cell treatment, Paxlovid, condoms for anal sex, and a suicide hotline shortcut.