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If you are having trouble viewing this email with images below, click here. |  | |  | | | Games like chess and checkers have been around for centuries for a reason: they're very easy to learn, but difficult to master. What other games make the cut for this list? | | | | | What makes scientists think that water is better at sustaining life than every other substance? | | |  | | |  | | | Underground structures are less susceptible to physical intrusion and natural disaster. They also offer constant temperatures, and require less energy to maintain. With all the benefits offered underground why we don't live there? | | | | | We live in a radioactive world, and we're not just talking about the times when a nuclear plant is melting down and scaring the heck out of us. How much do you know about the ABGs (or alphas, betas and gammas) of nuclear radiation? | | |  | | |  | | | If you're a music lover and own a portable MP3 player, chances are you've used an MP3 file recently. But how do MP3s work? And how do they stack up against CD-quality songs? | | | | |  | | | At Discovery, we value your privacy. If you would like to adjust your email preferences, please click this link to our
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