Is there a name and an explanation for the “nails on a chalkboard” reaction?

 

Baby crocodiles make noise even before they are introduced to the cold hard world.

 

To some theorists, an announcement last week virtually guarantees the existence of other Earthlike worlds.

 

Scientists have created what amounts to an automatic worm sorter on a chip.

 

Homes are a new arena for LEED ratings, environmental badges of honor usually given to commercial buildings.

 

John Kao is seeking links between science and policy, talent and capital.

 

Twenty years after turning climate change into breaking news, James E. Hansen will tell a House committee on Monday that it is not too late to defuse what he calls the “global warming time bomb.”

 

Is there a name and an explanation for the “nails on a chalkboard” reaction?

 

Mr. Galston did early research that helped lead to the herbicide Agent Orange, then helped raise awareness of the military’s use of it in Vietnam.

 

To some theorists, an announcement last week virtually guarantees the existence of other Earthlike worlds.