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Did Earth's twin cores spark plate tectonics?

Seeded on Tue Jan 6, 2009 4:14 PM EST (msnbc.com)

It's a classic image from every youngster's science textbook: a cutaway image of Earth's interior. The brown crust is paper-thin; the warm mantle orange, the seething liquid of the outer core yellow, and at the center the core, a ball of solid, red-hot iron.

science, technology-science, msnbci

Latest Comments

Maker of tainted wipes gets FDA nod toward reopening
Wed Dec 28, 2011
- You are clearly passionate, but you know very little about the FDA or what "re-working" or "reconditioning" means. The fact that you don't know what the processes may involve means jack squat, as you wouldn't understand it anyhow, and it's none of your business.
Syria kills 60 fleeing soldiers, reports say
Tue Dec 20, 2011
- If there's no mention, how come you and everyone else in the world know about it? Caught you in a polemic there. And please see all the UN military actions of the past decade or so. Remember Libya?
Syria kills 60 fleeing soldiers, reports say
Tue Dec 20, 2011
- Not at all, unless you are unable to parse the difference between wholesale killing and pepper spraying. Some Doctor(?)
IPads change economics, and speed, of hotel Wi-Fi
Tue Oct 25, 2011
- Utter nonsense. Hotels already have numerous T1 lines, and the load of guest internet use is minimal. It's just another "what more can we charge for?" fee.
Animal advocates defend shootings on Ohio farm
Wed Oct 19, 2011
- These animals are not "domesticated" like dogs and house cats. Stop thinking of them as pets, they are wild animals. Being kept in a stall or pen does not equal domesticated.
Archaeologists find Viking burial site in Scotland
Wed Oct 19, 2011
- Ahh, that's archaeological correctness coming out. The fact is, with horned goats, sheep and cattle all around them, and the means of attaching horns to a helmet not very difficult, the better question is "why wouldn't they have horns?".
Second wipe-maker issues recall after bacteria detected
Tue Sep 20, 2011
- Really, the surface bacteria wiped away before a shot are not likely to cause real problems 99.99% of the time; it's the anaerobic bacteria that are going to kill you, and an alcohol wipe doesn't even reach them.
Second wipe-maker issues recall after bacteria detected
Tue Sep 20, 2011
- NewStart is right, and really FDA does a great job in extremely difficult circumstances. Of course, being anti-regulatory, you'll be happy to let us know which country has an unregulated drug and device agency that does a better job than FDA. Don't be a tool.
Maker of tainted wipes sues vendor who won't pay
Fri Aug 19, 2011
- They're not a vendor, they are a customer.
Big fast-food chains get low marks in taste test
Thu Jun 30, 2011
- Upwards of $20? Nonsense. And this is an article about "fast food" not sit-down/wait-staff restaurants like Chili's. Don't forget to add gratuity and tax to the $20 at Chili's, too.

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