Our picks for the week of Dec. 13-19: 

• Voila! See our photo gallery of 12 animals with a creative bent.

Does green make you mean? One group of scientists seems to think so — conveniently, just in time for Christmas.

The plight of the reindeer: Will Santa's helpers go down in history with climate change?

• Doctors discover 50 sewing needles inside a 2-year-old in Brazil.

• Media Mayhem: Our love affair with the automobile isn't so romantic after all. 

• Check out our photo gallery of 7 unlikely things global warming could take away from you.

• Mother Nature's clock is keeping a watch on your world. This week, look at electricity use vs. population growth. It's eye-opening.

MNN's last-minute, affordable green gift guide.

• In case you missed it this week, check out this clever octopus that created a coconut shelter — and took it with him.

• And finally, don't miss these awesome animal vs. animal videos from YouTube. We've compiled 19 of the best ones for your viewing pleasure.

PLUS: Take a tour of the planet with our week in photos.