You can learn about timing, the best seeds, what types of grass grow best in the region you live in, how to water, and which fertilizer to use.

FORBES: Nurture Your Network

In California, well-connected farmers grow rice in the desert, even as Los Angeles begs for water.

ECONOMIST: Water

Some of the abuses have long been obvious: California's farmers suck up 85% of the state's water at subsidised rates and then grow thirsty crops such as cotton in the desert.

ECONOMIST: California's economy

Now the British believes the key lies in rebuilding roads and water systems so farmers can grow alternative crops and get them to market.

BBC: Programme transcript

When people drink the water, the worm begins to grow inside them and can reach one meter in length.

CNN: How fight against Guinea worm was won

For example: if a company somewhere in Africa chops down a forest to grow food destined for Europe, and that deforestation wrecks the water supply used by villagers, who's to blame - the Africans or the Europeans?

BBC: The joylessness of shopping

For example, as part of the process, scientists grow the marine organisms under varying temperatures, and link changes in their shells' chemical signature to different water temperatures.

WSJ: In Study, Past Decade Ranks Among Hottest

Mindful that the city's residents grow ever unhappier, politicians have cooked up various schemes to bring water in from faraway places.

ECONOMIST: Water