Before you head for the beach, some science, environment, and health posts from our other blogs to kick off your holiday weekend:

Geeks' Green Dreams: Silicon Valley techies can't bankroll green energy on their own (much as they might like to). That's why we need creative incentives, and not just tax credits.

Healthcare Humdinger: If you're confused by the Congressional Budget Office's latest healthcare cost estimates, you're not alone.

Lies Your Sunscreen Tells You: SPF 100? All-day protection? Sweat-proof? Uh, not quite. Plus: Want to get enough vitamin D? Here's how, no tanning salon required.

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