Neolithic engineers used scientific knowledge to build huge megalith
The interior of the monument in Spain known as the Menga dolmen Miguel Ángel Blanco de la Rubia Neolithic people
Engineered bacteria destroy antibiotic resistance DNA in wastewater
Shewanella oneidensis bacteria could remove antibiotic resistance genes from wastewater Ella Maru Studio/Science Photo Library Bacteria engineered to destroy DNA
PFAS: How ‘forever chemicals’ reached one of the world’s most pristine areas
A type of hormone-disrupting forever chemical was found in the Amazon’s air Sebastian Brill/MPI-C Some of the most pristine parts
Mpox: Everything you need to know about the 2024 outbreak
Illustration of the mpox virus Getty Images/Science Photo Library The World Health Organization (WHO) has declared a public health emergency
How crocodiles were taught to stop eating deadly toxic cane toads
Freshwater crocodiles (Crocodylus johnstoni) are at risk from toxic cane toads Paul Mayall Wildlife/Alamy Wild crocodiles in Australia keep dying
Covid variant JN.1 may have become dominant due to just one mutation
JN.1 spread widely despite many people being vaccinated and having previous covid-19 infections Debarchan Chatterjee/NurPhoto/Shutterstock One mutation may have been
Erythritol: A common low-calorie sweetener raises the risk of blood clotting
A popular sugar alternative could harm heart health PawelKacperek/Shutterstock The low-calorie sweetener erythritol makes blood more prone to clotting. This
Streetlights may make tree leaves tough and hard for insects to eat
Artificial light at night may affect tree leaves Shutterstock/Patryk Kosmider Urban trees lit by streetlights tend to have tougher leaves
Galaxy cluster smash-up lets us observe dark matter on its own
When galaxy clusters collided, the dark matter (blue) sailed ahead of the normal matter (orange) W.M. Keck Observatory/Adam Makarenko When
How does the Olympics test for doping and is it good enough?
Members of the World Anti-Doping Agency at a press conference for the Olympic Games in Paris, France, on 25 July