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Air Pollution Kills 5.5 Million Per Year, Half in China and India Alone
science.howstuffworks.com/environmental/green-science/air-pollution-kills.htm
Millions of people die every year because of poor air quality, new international research finds. That number is expected to rise in coming years.
Airplane Seat Cushions: Stealthy Fart Filters of the Future?
science.howstuffworks.com/transport/flight/modern/airplane-seat-cushions-fart-filters-of-future.htm
There are so many tweaks we wish airlines would implement, especially if future seat configurations mean stacking passengers with butts suspended above heads.
Airports That Float
science.howstuffworks.com/engineering/civil/airports-that-float.htm
What do you do when you're out of land but want to expand an airport? Try building on water.
Aldebaran: The Brightest Star in the Constellation Taurus
science.howstuffworks.com/aldebaran.htm
Aldebaran is not just the brightest star in the constellation Taurus, it's also the 14th brightest star in the sky.
Algae: Pond Scum or Food of the Future?
science.howstuffworks.com/innovation/edible-innovations/algae-food-future.htm
Algae represents big money to some investors and could provide protein to help solve the problem of world hunger.
Alien Abduction Theories: A Scientific Search for Evidence
science.howstuffworks.com/space/aliens-ufos/alien-abduction.htm
Many people have reported alien abduction stories. Most of the abductees have shared their stories through hypnosis. Read more about alien abductions.
Alien Sightings: Probing the Influx of UFO Reports
science.howstuffworks.com/space/aliens-ufos/where-most-ufos-are.htm
For centuries, people have been reporting sightings of strange objects in the sky - unidentified flying objects (though UAP is the term du jour). These events continue to captivate the world.
Aliens? Lasers? Water? What Caused the Al Naslaa Rock to Split So Precisely?
science.howstuffworks.com/environmental/earth/geology/al-naslaa-rock.htm
Split as if by a laser, the Al Naslaa rock in Saudi Arabia's Tayma Oasis baffles scientists and amateur geologists alike. How did this perfect split happen?
Alkali Metals: Elements in the First Column of the Periodic Table
science.howstuffworks.com/alkali-metals.htm
Although the term might be unfamiliar, you know all about alkali metals. Ever used salt or eaten a banana? So, what special properties do these elements have?
All Salt Is Not the Same
science.howstuffworks.com/innovation/edible-innovations/all-salt-is-not-same.htm
Salt is something most of us use without thinking about it. But with so many options available, how do we know what's best?