Research links human ability to regrow cartilage to molecules that help amphibians sprout new limbsContrary to popular opinion, humans can regrow cartilage in their joints, researchers have found. Experts hope the research could lead to new treatments for a common type of arthritis.Osteoarthritis, in which joints become painful and stiff, is the most common form of arthritis and is thought to...

A man’s worry seems to be hardwired – as if being fertile constitutes a meaningful measure of masculinityI read that tomatoes might be good for a fella’s sperm count. Sperm’s always been a worry for me, ever since the day of the 1978 FA Cup final. I’ll spare you the goriest of the details, but the long and, er, short of it is that I fell off my bike going to my nan and grandad’s house...

Fossil fuel giants have known the harm they do for decades. But they created a system that absolves them of responsibilityLet’s stop calling this the Sixth Great Extinction. Let’s start calling it what it is: the “first great extermination”. A recent essay by the environmental historian Justin McBrien argues that describing the current eradication of living systems (including human...

John B Goodenough, M Stanley Whittingham and Akira Yoshino made laureates for development that sparked portable technology revolution• Report: chemistry Nobel given to lithium-ion battery researchers 12.19pm BST More reaction from Royal Society President Venki Ramakrishnan:“Professor Goodenough’s contributions in the field of materials science have fundamentally shaped the technology we take...

New data shows how fossil fuel companies have driven climate crisis despite industry knowing dangersThe Guardian today reveals the 20 fossil fuel companies whose relentless exploitation of the world’s oil, gas and coal reserves can be directly linked to more than one-third of all greenhouse gas emissions in the modern era.New data from world-renowned researchers reveals how this cohort of...