11:59:60 — Look For An Extra Tick Of The Clock Tonight
"Leap seconds" are added from time to time to keep atomic clocks in sync with a time standard tied to the rotation of the Earth. This will be the 26th time it's been done.
Science
Venus And Jupiter Set For A Close Encounter Tuesday Night
NASA says the two bright planets will be "a jaw-dropping one-third of a degree apart" around sunset. It's the closest they'll come in their current 24-year cycle.
SpaceX Rocket Breaks Up On Liftoff
In Florida, an unmanned supply rocket blasted off for the International Space Station, but something went wrong. The loss of the rocket, which was also carrying experiments, is a setback for NASA.
Medical School Hopefuls Grapple With Overhauled Entrance Exam
The results are coming in for the first medical school candidates who took a revamped exam that includes a wider range of subjects, including psychology and sociology.
Supreme Court Rules In Industry's Favor. What's EPA's Next Move?
Monday's decision from the high court technically only applies to the Clean Air Act's standards on mercury emissions from power plants. But it could affect future EPA regulations, legal experts say.
U.N. Holds Climate Talks In New York Ahead Of Paris Meeting
The United Nations is having a high-level climate meeting ahead of the end-of-year meeting in Paris that will hopefully result in a major new agreement to rein in greenhouse gases.
Why You Should Thank A Caterpillar For Your Mustard And Wasabi
Eons ago, cabbage butterfly larvae and the plants they eat began an evolutionary arms race. The result: "mustard oil bombs" that give the plants, and condiments we make from them, distinctive flavors.
Dynamic Duos: How To Get More Nutrition By Pairing Foods
Adding eggs to salads helps us absorb the beneficial pigments like beta carotene in the raw vegetables, a new study finds. Here are other foods that, when eaten together, pack a more nutritious punch.
Supreme Court Blocks Obama Administration Plan On Power Plant Emissions
In a 5-4 ruling, the court says the Environmental Protection Agency should have taken into account the costs of complying with regulation.
Organic Farmers Call Foul On Whole Foods' Produce Rating System
Some organic farmers are protesting a new system Whole Foods is using to rate its suppliers. They say the system devalues the organic label because nonorganic producers can earn the highest grades.