Tar balls wash ashore on Florida beaches, but the source of the sticky black goo is a mystery
The U.S. Coast Guard has been searching for tar balls that began showing up on Florida beaches over the weekend. So far, the ...
National Audubon Society12h
Where Have All The Birds Gone?
Q: The amount of effort that goes into a Christmas Bird Count varies quite a bit across years and count circles. How do you deal with this issue when you calculate abundance trends? How do you know ...