12,000-year-old rock art hints at the Arabian Desert’s lush past

The camels at Jebel Misma have been frozen in a march for 12,000 years. “They are really spectacular,” says paleoanthropologist Michael Petraglia. “They’re beautiful, monumental.”   A herd of the animals are cut into a cliff towering above the mostly flat desert landscape of Saudi Arabia’s Nefud. The engravings are life-size, inscribed with about 150…

Read More

Extraordinary pictures show what a common antibiotic does to E. coli

The top image shows an untreated E.coli bacterium; the bottom shows a bacterium after 90 minutes of being exposed to the antibiotic polymyxin B Carolina Borrelli, Edward Douglas et al./Nature Microbiology The way antibiotics called polymyxins pierce the armour of bacteria has been revealed in stunning detail by high-resolution microscopy, which could help us develop…

Read More
Back To Top