Scientists rethink why giant insects once ruled the skies, finding oxygen may not explain their size or disappearance.

The problem with diffusion is that it’s notoriously slow. The oxygen constraint hypothesis argued that the larger the insect ...

A long-term study in Colorado reveals that insect populations are plummeting even in remote, undisturbed areas. Over two decades, flying insect abundance dropped by more than 70%, closely linked to ...

Concern about insect losses has grown steadily, but most evidence comes from small studies focused on certain species or places. That makes it hard to understand what is happening at larger scales. A ...

Around 100 trillion insects fly in the skies above the USA on a summer's day, according to estimates by researchers from the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL) and ...