Vision begins in the retina at the rod and cone photoreceptors, which are sensory neurons with specialized visual pigments for capturing light quanta. Most mammals have one type of rod and two ...

Rare Tree Kangaroo Reappears After Vanishing for 90 Years. Once thought to be extinct, the Wondiwoi tree kangaroo has just been photographed in a remote New Guinea mountain range.

Children aged 0-14, and young people aged 15-24, each account for less than one per cent of all new cancer cases in the UK (2017-2019). [1-4] Adults aged 25-49 contribute around a tenth (9%) of all ...

And while some mammals, birds, small reptiles, fish, and amphibians survived, diversity among the remaining life-forms dropped precipitously. In total, this mass extinction event claimed three ...

What’s on TV: the Isle of Wight Festival, a new Serena Williams docu-series, and more Your complete TV guide to the week’s best shows, across terrestrial and digital platforms ...