Whit Gibbons

Q. I have been unsuccessful in getting a satisfactory answer about how destructive shrews and moles might be to my lawn and garden. What should I do about them?

Think moles and shrews are ruining your garden? An expert explains why you should leave these creatures alone.

Q. You reply to a lot of biology questions, sometimes citing scientific publications that have the answer. Have you run across any animal mysteries that do not have a surefire explanation?

Q. You reply to a lot of biology questions, sometimes citing scientific publications that have the answer. Have you run across any animal mysteries that do not have a surefire explanation?

Researchers are investigating why many turtles have a mysterious black bar in their eyes and if it aids navigation.

I receive versions of the following questions every spring and summer as people begin to have more interactions with our native wildlife.

I receive versions of the following questions every spring and summer as people begin to have more interactions with our native wildlife.

If you keep up with where the next SpaceX or Blue Origin rocket is headed, you are probably familiar with NASA’s Double Asteroid Redirection Test, a project to determine if a rocket launched from Earth can alter the course of an asteroid by colliding with it. If DART had been available 63 million years ago, dinosaurs might still roam the earth. When dinosaurs went extinct following an asteroid collision, life on earth was changed forever. It could happen again if a sizable asteroid gets a direct hit. Meanwhile, the possibility of life on other planets continues to intrigue scientists and laypeople alike.

Scientists are exploring the risks of finding alien life and whether it could pose a threat to human safety.

If you keep up with where the next SpaceX or Blue Origin rocket is headed, you are probably familiar with NASA’s Double Asteroid Redirection Test, a project to determine if a rocket launched from Earth can alter the course of an asteroid by colliding with it.