When light hits an object, the object reflects some of the light. The wavelengths of reflected light determine what color you see. It has been estimated that humans can distinguish roughly 10 million different colors, although the identification of a specific color is highly subjective, since even the two eyes
In the eighties, while NASA researchers were exploring the idea of using algae as a way to create oxygen in outer space through the process of photosynthesis, they found that certain types of algae contain a couple of essential fatty acids that are present in human breast milk — Docosahexaenoic
It may have been April Fools’ Day, but Steve Jobs, Steve Wozniak, and Ronald Wayne were not joking around when they came together on April 1, 1976, to form Apple Computer Inc to sell the Apple I personal computer kit. The kits were hand-built by Wozniak and first shown to
The sea otters regularly float in groups known as rafts not only when they sleep but also while eating and resting. A raft can range from two to several hundreds! As they go about rafting, they all hold hands so as to stay together in their group. The sea otters
Your skin is composed of several layers. The layer you can see is called the epidermis. It is composed of cells made of keratin, a hard substance that also forms your hair and nails. The individual cells are called keratinocytes. New keratinocytes grow at the lowest level of the epidermis,
Facing a class-action lawsuit from angry vegetarians in 2011, McDonald confirmed that its French fries are prepared with beef extract. The list of French-fry ingredients that McDonald’s offers at its franchises and on its Web site includes potatoes, partially hydrogenated soybean oil and “natural flavor” which includes the beef flavoring.
The Bertrand Bookstore in Lisbon, Portugal has been open since 1732. It was open by Peter Faure to be a hub of Lisbon’s art and intellectual scene, over time, has become the cornerstone of the Bertrand bookstore chain, has more than 50 stores throughout Portugal. The store has not been
Sunlight travels at the speed of light. Photons emitted from the surface of the Sun need to travel across the vacuum of space to reach our eyes. We orbit the Sun at a distance of about 150 million km. Light moves at 300,000 kilometers/second. Divide these and you get 500