Half of the oxygen we breathe comes from Phytoplankton

When we think about Earth’s sources of oxygen, we usually think of vast forests such as the Amazon, but about half of the oxygen we breathe comes from elsewhere; it’s produced by phytoplankton. Phytoplankton are tiny, single-celled plants that live in the ocean, and they serve as the base of the oceanic food chain. Yet as important as phytoplankton are to life on Earth, their interaction with our planet has only recently been studied on a global scale.

Top ten energy food

A hectic lifestyle makes it easy to skip a meal or just grab less-than-nutritious food on the run. But a busy day doesn’t have to stand in the way of great health. A multivitamin is great insurance for days when you do miss a meal or two, but real food should always be your primary source of nutrients. Keep these 10 foods on hand at all times, and you'll be able to whip up a delicious meal or snack that will keep your energy up and your immune system strong.