- Will the Kindle 2 make books obsolete? Or will books give Kindle 2 a good ass-whupping? (Look, even if you're sick of reading reviews of the e-reader, this animated smackdown is the best.)
- Hopes for electric cars powered by lithium-ion batteries could mean a change for the auto industry, and for Bolivia, which has about half of the planet's known lithium reserves. Politicians hope that they'll also be able to develop battery-production facilities in Bolivia, but some industry insiders are skeptical that would happen.
- Speaking of smackdowns, in the debate over clean coal, an unlikely set of players have entered the ring: the Coen brothers, filmmakers best known for death by wood-chipper, who've directed a TV ad advocating against the coal industry.
- The British Ministry of Defence hopes that a gel that hardens on impact can be used in soldiers' helmets to slow the impact of bullets or shrapnel. The gel, which becomes flexible again once the pressure is removed, is already used in shin guards, ballet shoes and other athletic gear.