According to scientists who maintain that dinosaur extinction came quickly, the impact must have spelled the cataclysmic end. For months, scientists conclude, dense clouds of dust blocked the sun ...
How do you know that finches' beak depth is heritable? You can see from Figure 2 that there is a correlation between the parents' and offsprings' beak size. How did the finch population change ...
A Stegosaurus specimen that became the most expensive dinosaur fossil ever sold earlier this year is now on display at the American Museum of Natural History in New York City. But it is not the ...