Evolution of intelligent life on earth may not have been so unlikely

A popular model of evolution concludes that it was incredibly unlikely for humanity to evolve on Earth, and that extraterrestrial intelligence is vanishingly rare. But as experts on the entangled history of life and our planet, we propose that the coevolution of life and Earth’s surface environment may have unfolded in a way that makes the evolutionary … Read more

Why is there so much gold in west Africa?

Militaries that have taken power in Africa’s Sahel region – notably Mali, Burkina Faso and Niger – have put pressure on western mining firms for a fairer distribution of revenue from the lucrative mining sector. Gold is one of the resources at the heart of these tensions. West Africa has been a renowned gold mining hub for … Read more

The Science Quiz | Surviving radiation

Fragments of an explosive device, a radiation warning sign in the foreground, are displayed by Ukrainian authorities after a drone attack at the former Chernobyl nuclear power plant, Ukraine, Friday, February 14, 2025. | Photo Credit: AP Questions: 1. There are four ways to measure radiation dose. Of these, gray and X measure the absorbed … Read more

‘Harmful contents in cosmetics, herbicide lead to endocrine disruption, hormonal imbalance’

Prof. B D Vishwajit and Mahesh Tanwade at work in the animal house in Sharnbasva University, Kalaburagi. | Photo Credit: ARUN KULKARNI An advanced laboratory studies on rats and mice on reproductive toxicity and endocrine disruptive compounds by two scientists of Sharnbasva University has revealed disturbing facts of how harmful contents in some cosmetics and herbicides … Read more

Researchers spot a clue as to why human and mouse genomes overlap

Eighty million years ago humans, rats, and mice shared the same mammalian ancestor. More recently, researchers made the astonishing discovery that even today our genomes contain close to 500 segments that have remained totally unchanged since then. These segments are called ultra-conserved elements (UCEs). Nearly all the UCEs are also highly unchanged in the chicken … Read more