Michael Le Page

Global warming will amplify the impacts of El Niño events, and could also make them much stronger and more far-reaching

Mice that contain cells with an added rat chromosome have been created by scientists. The next step is to try this with frozen elephant tissue – and if that works, the team will try it with frozen mammoths

A team in the US has reported promising results after using an improved form of CRISPR to gene-edit human embryos, but a major issue remains unsolved

Climate models suggest a small nuclear war in the tropics would do even more damage to the ozone layer than a larger nuclear war in more northerly latitudes, increasing exposure to dangerous ultraviolet radiation all over the world

A photo essay from Tommy Trenchard explores efforts to protect the fragile ecosystems of oases in Chad

DNA evidence shows that plague bacteria devastated a community in Siberia more than 5000 years ago, challenging the idea that there were no major disease outbreaks before the advent of farming and large settlements

We already know the vaccine against human papillomavirus, or HPV, greatly reduces infections and cases of cervical cancer, and now we have the first evidence it prevents deaths too

Efficiency ratings on portable air conditioners don’t give consumers the full picture, and one type of aircon unit is so inefficient that it should be banned, says Michael Le Page

Fans can make you hotter rather than cooler, but the temperature at which you should turn them off depends on several factors, including your age and the humidity level

We have developed genetic technologies that could wipe out entire species of pests that are harmful to us. Columnist Michael Le Page says the flesh-eating screwworm is the most likely first target