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Chicxulub Crater: Where the End of the Dinosaurs Began
science.howstuffworks.com/environmental/earth/geology/chicxulub-meteor.htm
The Chicxulub meteor impact may have killed off the dinosaurs. Would they have lived if the meteor missed? Learn more about the Chicxulub meteor.
Chimerism: You Can Be Your Own Twin
science.howstuffworks.com/life/genetic/chimerism-be-own-twin.htm
Tetragametic chimerism occurs when a single organism has two genetically distinct types of DNA.
Chloroplasts Are the Plant Cells That Manufacture Energy
science.howstuffworks.com/life/cellular-microscopic/chloroplasts.htm
Chloroplasts are where some of the most miraculous chemistry on Earth goes down.
Chronometer
science.howstuffworks.com/dictionary/astronomy-terms/chronometer-info.htm
A chronometer is a timepiece that is exceptionally accurate. Traditionally, the term refers to the marine chronometer. Learn more at HowStuffWorks.
Cinnabar: Red, Beautiful — and Toxic
science.howstuffworks.com/environmental/earth/geology/cinnabar.htm
Cinnabar's bright-red pigment has been used in jewelry, pottery and makeup for millennia. But cinnabar is also the primary ore for mercury, making it a dangerous mineral if the particles are inhaled.
Classic Airplanes
science.howstuffworks.com/transport/flight/classic/classic-airplanes.htm
Every one of these classic airplanes was the product of loving care of an intelligent design team doing the best work of their era. Learn how aviation evolved and find links to classic airplane profiles, from the early years through today's jet age.
Climate Activist Greta Thunberg Wants More Results, Less Politics
science.howstuffworks.com/environmental/conservation/issues/greta-thunberg-news.htm
In the lead-up to U.N. Climate Change Conference, the Swedish activist talked about Biden's climate plan, the media's responsibility and what gives her hope.
Climate Change Threatens the Moai of Easter Island
The statues of Easter Island have stood for over 800 years. See how climate change and rising seas are affecting them with HowStuffWorks.
Coast Guard Rescue Swimmers Risk All to Save Lives
science.howstuffworks.com/rescue-swimmers.htm
U.S. Coast Guard rescue swimmers routinely jump out of helicopters into dangerous waters, risking their lives to save others.
Cobalt: Essential for Batteries and Bright Blues
science.howstuffworks.com/environmental/earth/geology/cobalt.htm
Cobalt is associated with the color blue, but it's so needed for rechargeable batteries that the U.S. put it on the list of minerals it can't live without.