Many people think that beautiful, blazing sunsets are one upside to living with the smog that hangs over polluted cities. Are they right? Does smog actually enhance sunsets?

Watch this video about 9-11 flashbulb memories on HowStuffWorks. Brain researchers have found that closeness counts when it comes to how strong our memories are. While everyone remembers where they were on 9-11 when they heard the news of attacks on the World Trade Center, those who were close to the event remember even stronger.

Your car. Your clothes. Your home. Almost anything you can think of has a green alternative, including the floor beneath your feet. But where can you buy these materials?

A federal science report stated in about 50 years, summer temperatures in the United States may increase by three degrees due to the smog, soot and other pollutants hanging over Beijing. Is it true that China has hired professional pollution sniffers?

Elective procedures can be as simple as Botox injections or as complicated as angioplasty or infertility treatments. But regardless, they're going to cost you, not your insurance company.

What if your house could tell you what the weather's like outside, call an ambulance if you get hurt, remind you if you forget to take your medicine or help you find that darn remote? Well, the Georgia Institute of Technology may be very close.
