26 May 2021
Several vaccines are less effective at preventing symptomatic infections by new variants, which is concerning because any degree of escape at this point could prevent countries from achieving herd immunity
25 May 2021
The director-general of the World Health Organization has called for a massive drive to vaccinate at least 10 per cent of every country in the world by September, and 30 per cent by the end of the year
25 May 2021
Rove beetles have glands in their abdomen that secrete a toxin, and they are made up of just two cell types that evolved together – which may be how other animal organs originated
25 May 2021
For the first time geoglyphs have been found in India, and one of the images dwarfs anything from Peru’s famous Nazca Lines – but it isn’t clear who made it or when
24 May 2021
Neutron stars, the remnant cores of stars that have gone supernova, are some of the densest objects in the universe, and their intense gravity means their surface differs in height by less than 0.1 millimetre
21 May 2021
The shutdown of a US oil pipeline is just the latest in a wave of ransomware attacks targeting everyone from small businesses to government agencies – what can be done to stop it?
21 May 2021
Some bird embryos can communicate with their parents by chirping through their egg, but will stay quieter if they think that predators are nearby
20 May 2021
Miniature swimming robots called microsubmarines that are powered by sunlight can degrade pollutants like explosives or dyes, removing harmful chemicals from water
20 May 2021
An artificial intelligence has disproved five mathematical conjectures, despite not being equipped with any information about the problems
19 May 2021
Dietary research can be automated with chest-mounted cameras that feed images of meals and leftovers to algorithms that can identify food and estimate how many calories it contains
