Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted to accurately gauge the age of these reptiles? Is this also an accurate ...
Do the bones of all Nile crocodiles have the same number of growth marks as their age? And can such growth rings be counted to accurately gauge the age of these reptiles? Is this also an accurate ...
A plantation worker photographed this new genus of mammal in New Guinea, thought to have been dead for 6,000 years.
Mammals are not especially diverse. Roughly 6,800 mammal species are known to exist, compared with about 8,800 species of amphibian, 11,000 species of bird and 12,500 of reptile. Yet when most people ...
Tiny fossil teeth from Colorado are revealing new clues about the very first relatives of primates, including humans.
The average drug now costs more than US$1 billion to develop and takes more than a decade to reach the market 1. And for every success, there are nine drug candidates that fail clinical trials 2. “In ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results