Every galaxy in the universe has on average one hundred billion stars in it. The vast majority of these stars are small and difficult to see: cool red dwarfs and dim white dwarfs.

[Read more...]

March 28, 2013


Planetarium explained, for kids

[Read more...]

March 7, 2013

Nuclear Energy

Nuclear energy explained, for kids

[Read more...]

January 31, 2013

Right Triangles

A right triangle has one angle equal to 90 degrees. A right triangle can also be an isosceles triangle–which means that it has two sides that are equal. A right isosceles triangle has a 90-degree angle and two 45-degree angles. This is the only right triangle that is an isosceles triangle. This version of the […]

[Read more...]

November 15, 2012


Whales are the largest animals. The largest whale is the giant blue whale which can reach lengths of 90-100 feet and weight as much as 120-150 tons. The commonly seen finback whale is the second largest animal to ever appear on earth.

[Read more...]

November 8, 2012


A rhinoceros is any of five surviving species of odd-toed ungulate in the family Rhinocerotidae. All five are native to Africa or Asia.

[Read more...]

September 20, 2012

Does the Internet Make You Dumb? Top German Neuroscientist Says Yes – and Forever

South Korean doctors were the first to describe this phenomenon, and dubbed it digital dementia – whence the title of Spitzer’s book. Simplistically, the message can be summed up this way: the Internet makes you dumb.

[Read more...]

September 20, 2012


“Perspective” in art

[Read more...]

September 13, 2012

Static Electricity (for kids)

Static electricity is an electric charge built up on persons or objects through friction.

[Read more...]

September 6, 2012


centipedes explained, for kids

[Read more...]

August 9, 2012



[Read more...]

July 12, 2012

Global Seas Rising?

An argument about global sea level rising

[Read more...]

June 28, 2012

U.S. Firms May Miss Out as Saudi Nuke Plan Advances

Top oil exporter Saudi Arabia expects to finalize its atomic energy plans this year but the U.S. nuclear industry may miss out on multi-billion dollar contracts to turn it into a reality unless Washington and Riyadh sign a non-proliferation deal soon.

[Read more...]

April 26, 2012

Revenge of the Electric Car

Preview of electric car

[Read more...]

April 19, 2012


stopwatches described, for kids

[Read more...]

March 15, 2012

Conveyor Belt

Conveyor belts explained, for kids

[Read more...]

March 8, 2012

Space Capsules

Space capsules were the first major form of space craft for manned space exploration.

[Read more...]

March 4, 2012

The Star Students Of The Islamic Republic

Forget Harvard—one of the world’s best undergraduate colleges is in Iran.

[Read more...]

February 9, 2012


optics explained

[Read more...]

January 19, 2012

« Previous PageNext Page »