Weekly Science & Politics News Roundup

• Are Olympic cheaters slipping through the cracks? • Turns out it's not just the uninsured who are getting screwed by medical bills: Those with insurance are under water as well. • Dear presidential candidates: No matter which of you wins, you'll be receiving a $9 billion bill for global warming. Please pay accordingly. • Do degenerating brain cells make us hungrier (and thus fatter) as we age? • "Pathological computer use": The argument continues. • More bad news for the South: Memphis has the highest infant mortality rate in the country.