MNN week in review montage

Our picks for the week of Nov. 14-20: 

• Do you care about the oceans? Then this one is a must-read. Coral reefs — the bedrock of ecosystems and economies around the world — may be on the verge of sparking a global sea change if they don't stop dying. 

• Which do you think offers a better nutritional value, fresh pumpkin or canned pumpkin? The answer —which you'll find in our Thanksgiving nutritional face-off gallery — might surprise you.
• You don't have to wait any longer to catch the latest Harry Potter movie. (But we hope you already bought your tickets!) Meanwhile, here are 10 ways real-life muggles can experience the thrill of Harry Potter.

• While were on that side of the pond, let's take a moment to consider the eco-mansion in Herefordshire that everyone is speculating will become home for the married Prince William and Kate Middleton.

• Our advice expert tackles a traveler's question: Are some subways greener than others? 
• What a great week for GM and the Chevy Volt! The Volt was named Car of the Year — not once, but twice. Find out why the auto experts are so impressed.

• Move over, there's a new light bulb in town. The ESL (electron-stimulated luminescence) bulb is cheaper than LEDs and safer than CFLs. 

• This week's book review is proof that you can find humor in anything. In "The Disappearing Spoon," Sam Kean shares funny-but-true tales about the scientists behind the periodic table. 

• Need a dose of cute? We've got 11 with our gallery of the smallest mammals in the world.

• And finally, file this under Things I Didn't Know I Needed to Know: Six unconventional ways you can use a microwave oven. 

Plus: If you haven't already flipped through the week in photos, you should check it out — some beautiful images from around the world.