A near-complete Alnashetri cerropoliciensis skeleton has emerged from Patagonia’s red sandstones. The under-1 kg dinosaur, part of the alvarezsaur group, was long considered elusive in the fossil record

Five European countries — the United Kingdom, France, Germany, Sweden and the Netherlands — have accused Russia of poisoning and killing opposition leader Alexey Navalny with epibatidine, a rare toxin derived from South American poison dart frogs