HumansNew Scientist’s guide to the 21 best ideas of the 21st century A quarter of a century in, this is our definitive pick of the ideas in science and technology that are already transforming the world Features
TechnologySmartphones may be beneficial to children – if they avoid social media In the ongoing debate over the benefits and harms of smartphone use in children, initial data from a US survey suggests the devices can actually improve well-being and social connections, but social media use may be more harmful News