There is an optimal point to how much money it takes to make an individual happy, and that amount varies worldwide, according to new research. There is an optimal point to how much money it takes to ...

Employing a library of more than 1,000 chemicals, scientists investigated how agrochemicals affect insect populations. The scientists found that exposure to non-fatal amounts of 57 percent of the ...

To participate, submit your response here by July 10 at 9 a.m. Eastern. This week’s winners will be announced by July 22. By The Learning Network Heeva Alavi, an Iranian-American, writes about her ...

Today:Early fog in the far southwest clears quickly. Most areas stay dry with sunshine and variable cloud, though northern and northeastern regions may see isolated showers. Light winds overall, ...