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Telophase: The Fourth Stage of Mitosis

Related Article: Learn more about dna.

This video describes how the new daughter chromosomes change back into the threads of chromatin and new nuclear membranes form during the telophase of mitosis.

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Growing Living Organs in a Lab (0:58)

U.S. researchers have grown a living and beating heart in a lab. Scientists from the University of Minnesota took hearts from dead rats and injected them with heart cells from newborn rats; the hearts then came to life. Video courtesy of Reuters.

The Discovery of the Iceman's Corpse (2:32)

In 1991, a mummified corpse was found in the Italian Alps, which turned out to be the remains of a man who died 5,300 years ago. The corpse was nicknamed "Ötzi."

Yellow River Pollution in China (2:02)

Watch this video about China's Yellow River pollution on HowStuffWorks. The Yellow River, cradle of China's thousands-year-old civilization, is shrinking and polluted so badly that nearly 70% of the river is not safe for drinking or swimming.... More »

Reducing Air Pollution and Toxic Emissions (11:22)

Watch this video about air pollution on HowStuffWorks. According the American Cancer Society, air pollution can be as damaging to our health as inhaling second-hand smoke. See how Lakes Environmental Software helps to reduce toxic emissions in this... More »

Protecting Our Nation's Food Supply (13:17)

Watch this video about homeland security on HowStuffWorks. Analysts have cautioned that terrorist attacks could occur within the food production or food processing environment. See how Wonderware helps to protect food processing and warehousing in... More »

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Tsunami (2:37)

What are the odds a Tsunami will hit the United States?

Plane Crash (2:40)

What are the odds you will die in a plane crash?

Lincoln's Coffee (2:51)

What are the odds the coffee you are drinking has the same water molecules as Abraham Lincoln's?

Lightning (1:57)

What are the odds you will be struck be lightning?

Earthquake (2:55)

What are the odds there will be an earthquake in the next 100 years?

Avalanche (2:36)

What are the odds you could die in an avalanche?

Aliens (2:49)

What are the odds there is extraterrestrial life in outer-space?

Weaponology: Rapid Fire 2 (5:08)

In the late 20th century, the Gatling gun was re-imagined as a new and far more lethal aircraft weapon.

Energy Policy: Alternative Fuel Technology (1:28)

John Hofmeister, President of Shell Oil Corp., discusses the role of technology in alternative fuels. Learn more about alternative fuel technology in this video.

Energy Policy: Combating Global Warming (1:40)

John Hofmeister, President of Shell Oil Corp., addresses the issue of global warming. Learn more about global warming in this video.