New Scientist

Analysis of the chemistry of ancient T. rex tooth enamel adds weight to the idea that the fierce Cretaceous predator controlled its body temperature

The amount of dust in the atmosphere has fallen, which is good for our lungs, but is a loss for ecosystems that depend on wind-borne nutrients

Researchers have watched a huge crater form on the lunar surface, and its widespread effects could help inform future exploration of the moon and other similar places

The longest satellite record ever compiled shows the vast majority of ice loss from Greenland and Antarctica is due to glaciers flowing faster, rather than warmer air temperatures melting them at the surface

Recent progress on alternatives to animal testing is hugely welcome. But talk of "phasing out" animal research completely is misleading and could even be dangerous to scientists

This week's cartoon from Twisteddoodles

Tom Gauld weekly cartoon

Feedback enjoys a new piece of research delving into papers whose titles mention Beatles songs – but wonders if there is an ulterior motive at work for those who pulled it together

If every ship on the planet were hauled out of the water, how much would global sea levels change, and how quickly? How different would Earth be if anaerobic life were the only life form, and could it have become sentient?

Yet more readers share their insights from their own four-legged friends – and one proposes a more general theory