Dr. Jonas Salk (October 28, 1914 – June 23, 1995) was an American research biologist who studied immunity, influenza, AIDS and polio. He is best known, however, for the development of the polio vaccine that has nearly eradicated the threat …[Continue]
Volcanoes
A volcano is an opening in the Earth’s surface that allows lava, hot gas, rock fragments and ash to explode from below. They are usually located at the edges of tectonic plates, where the plates are either shifting apart from …[Continue]
Endangered Species
Since the Endangered Species Act was enacted in 1973, many species have been saved from extinction, including the bald eagle, the humpback whale, and the American bison. Sometimes, however, despite enormous investments of time and money, efforts to save a …[Continue]
Antarctica
Antarctica is a cold, dry, icy, mountainous continent that surrounds the South Pole. Although few animals can survive the extreme conditions in the interior of the continent, the surrounding seas are home to penguins, seals, whales, and many kinds of …[Continue]
Science Fair Ideas
Fretting over your science fair project? Having trouble coming up with an idea that interests you? Jump start your creative thinking by browsing through these science fair sites that list hundreds of projects, along with tips on choosing one that’s …[Continue]
Human Anatomy
Human anatomy is the study of the human body. The word “anatomy” derives from Greek words meaning “to cut up” because early scientists studied anatomy through dissections. On the Internet, however, no knives are needed. Simply sit back, and click….[Continue]
Sputnik
On October 4, 1957, at the height of the Cold War between the Soviet Union and the United States, the Soviets launched Sputnik, the first man-made satellite, into orbit around the Earth. This surprise achievement created a crisis in the …[Continue]
Fall Leaves
Here in coastal San Diego we don’t get a very showy display of fall colors. But no matter where you live, the Internet provides a window where you can watch the Eastern leaves fall from the comfort of your computer …[Continue]
International Space Station
The International Space Station (ISS) is a low-flying research facility jointly operated by the space agencies of the U.S., Russia, Canada, Japan, and eleven European countries. It was assembled piece by piece in space, starting with a Russian module put …[Continue]
Seasons of the Year
Ever wonder why the northern and summer hemispheres have opposite seasons? Or why the longest day of the year is considered the start of summer? Whether you are just learning when to wear a winter coat, or are studying high …[Continue]
