SCIENCE

Weight-loss drugs lower impulse to eat – and perhaps to exercise too

Weight-loss drugs might make people less inclined to exercise Me 3645 Studio/Getty Images Semaglutide – the drug in medications like

SCIENCE

MDMA was hyped as a promising treatment for PTSD – what went wrong?

MDMA has long been used recreationally but it has faced obstacles getting approved for medical therapies Shutterstock / Couperfield “The

SCIENCE

Qianfan: China’s answer to SpaceX’s Starlink mega constellation is also threatening astronomy

An artist’s impression of the Qianfan satellite mega constellation CCTV China has begun construction of a mega constellation that will

SCIENCE

Here’s how coral reefs might survive hotter, more acidic oceans

Coral after an episode of bleaching fadhlanbr/Shutterstock Coral reefs may be more capable of adapting to hotter and more acidic

SCIENCE

Map of the immune system changing with age may help optimise vaccines

The map of the immune system, with each dot representing an immune cell and dots of the same colour belonging

SCIENCE

Pain relief from the placebo effect may not actually involve dopamine

Dopamine (red) approaching one of its receptors (blue) JUAN GAERTNER/SCIENCE PHOTO LIBRARY/ALAMY The hormone and neurotransmitter dopamine is generally believed

SCIENCE

XEC: What we know about the new covid-19 variant and its symptoms

Covid-19 variant XEC may spread more easily than previous variants Jarun Ontakrai/Shutterstock A new covid-19 variant called XEC has started

SCIENCE

Light has been seen leaving an atom cloud before it entered

Light can get away with an impossibly fast journey due to quantum fuzziness Михаил Руденко/Getty Images/iStockphoto In the quantum realm,

SCIENCE

Polaris Dawn mission is one giant leap for private space exploration

An artist’s rendering of the spacewalk on the Polaris Dawn mission SpaceX SpaceX’s Polaris Dawn mission is a leap forward

SCIENCE

Mega El Niños may have played a part in the Permian mass extinction

Illustration of the end-Permian extinction event, when extreme temperatures may have killed off forests RICHARD JONES/SCIENCE PHOTO LIBRARY The Great