And makes it easier to open stuff. (Link - warning NYT article, so it'll count against your 20 if you're not a subscriber).

But the maddening -- and nearly impenetrable -- plastic packaging known as clamshells could become a welcome casualty of the difficult economy. High oil prices have manufacturers and big retailers reconsidering the use of so much plastic, and some are aggressively looking for cheaper substitutes.

Target has removed the plastic lids from its Archer Farms yogurts, has redesigned packages for some light bulbs to eliminate plastic, and is selling socks held together by paper bands rather than in plastic bags.

Wal-Mart Stores, which has pledged to reduce its packaging by 5 percent between 2008 and 2013, has pushed suppliers to concentrate laundry detergent so it can be sold in smaller containers, and has made round hydrogen peroxide bottles into square ones to cut down on plastic use.

At Home Depot, Husky tools are going from clamshell to paperboard packaging, and EcoSmart LED bulbs are about to be sold in a corrugated box, rather than a larger plastic case.

Next time link to a Google search to the article. It doesn't count if you go through Google.