When chemists design new chemical reactions, one useful piece of information involves the reaction's transition state—the ...

Batman has made questionable decisions before, but his latest battle puts him at odds with the Red Hood, where Bruce makes an ...

Gang violence in Haiti has continued to further deteriorate the country's security and the crisis is reaching "a point of no ...

Calls for more aid, support for police amid surge in violence in the Caribbean nation since the end of last year.

These points of no return are specific moments when the planet has warmed so much that certain effects become irreversible.

These points of no return are specific moments when the planet has warmed so much that certain effects become irreversible. Scientists assessed the risk of “tipping” in 16 different parts of ...

On Monday, the U.N.'s top envoy for the country warned that gang violence in Haiti was nearing the "point of no return." Photo by Johnson Sabin/EPA-EFE Advertisement ...

Haiti, where rampant gang violence has surged in recent weeks, is approaching a "point of no return" leading to "total chaos," the UN special representative to the troubled Caribbean nation warned ...