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How Biodegradation Additives Work
science.howstuffworks.com/environmental/green-science/biodegradation-additives.htm
Plastic's handy, hardy stuff, but we don't want to leave piles of old forks and water bottles for future generations to trip over. Can special additives that break down plastics faster save the day?
10 Reasons Why Bridges Collapse
science.howstuffworks.com/engineering/structural/10-reasons-why-bridges-collapse.htm
You may see most bridges as those things you cross on your way to somewhere else, but where would you be if one collapsed? We've figured out 10 reasons why the worst happens.
10 Countries With Perfect Climates
science.howstuffworks.com/nature/climate-weather/atmospheric/10-countries-with-perfect-climates.htm
A perfect climate means different things to different people. These 10 countries span the globe and offer a wide range of climates to satisfy any taste -- hot, cold or in-between.