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If you want to ripen a banana faster than they would on your countertop/table, the apple in a paper bag works. The apple releases ethylene gas, which causes fruit to ripen. Enclosing the banana in the bag with the apple concentrates the gas inside the bag.

It's a way of measuring the "health" of some environments. If you take a stream impacted by dumping, and compare it to one that's not, but has the same water chemistry and physical features, you might expect that there would be fewer (and fewer types) of organisms living in it. But not all...

It's due to a combination of the number of native species (plants only are considered, not animals) present in an area and that area being threatened with habitat loss. The actual criteria are : "it must contain at least 1,500 species of vascular plants (> 0.5 percent of the world’s total) as...

In my mycology class, we grew it (and most other fungi) in a slightly acidic environment, ~pH 5.0. It seemed to do best in pH 4.5-5.0, and media with a more neutral pH favored bacterial growth, so other antibiotics were added if these were used to give the fungi an edge. But the penicillium...