Latest Daniel Rabosky Stories
North American and Australian snakes evolved independently, but into similar body types over millions of years. These snakes are stout-bodied and highly camouflaged, which help them move and ambush prey more efficiently.
A new study could deal a major blow to the prevailing theory of how species form – that a new species arises when a barrier prevents reproduction between populations.
Efforts to restore sturgeon in the Great Lakes region have received a lot of attention in recent years, and many of the news stories note that the prehistoric-looking fish are "living fossils" virtually unchanged for millions of years.
It's long been accepted by biologists that environmental factors cause the diversityâ€”or numberâ€”of species to increase before eventually leveling off.
- An uxorious, effeminate, or spiritless man.
- A timorous, cowardly fellow.