Fossil Friday: Purgatorius and the Abrupt Origin of Primates
Primates not only appeared suddenly, but their different subgroups of lemurs, tarsier, and simians all appeared at about the same time.
Without Hemoglobin, How Do Icefish Survive the Cold? By Design
Icefish, aka the family Channichthydiae, survive at 0oC in the Southern Ocean by maintaining blood viscosity at the set point of 3.27 centipoise.
Could We Ever Recover Dinosaur DNA?
There have been a number of unexpected finds from dinosaurs besides bones; some paleontologists dig hopefully.
At What Point In Its Development Can a Human Being Feel Pain?
Peter Singer has argued that animals, like humans, deserve protection because of their ability to suffer.
No, We Are Not “Beasts”
Maxim Loskutoff recounts the time he and his girlfriend were threatened by a grizzly bear while hiking in Montana.