Hectare

The lumberjack fell a hectare of forest.

Here, on this quiet, 56-hectare (140-acre) campus, about 500 students are immersed in contemporary Native American arts and culture.

I have a hectare of land.

It requires a hectare of land.

That requires a hectare of land.

It is this single 337-hectare rectangle of woodlands and bridle trails, playgrounds and historic plazas, that provides an alluring stage for the pastimes of the 25 million people who visit the park each year.

Donato's results showed mangroves store about three to four times more carbon per hectare as temperate forests or even tropical rainforests.

In Haryana's Anjanthali village, Vinod Kumar used to grow rice and wheat using traditional methods on his 10-hectare farm, but in recent years he says even village elders were puzzled by the new diseases attacking crops such as wheat, which scientists blame on increased temperature variation.

When they were released into a 20-hectare oak forest in 2010, seven bison cleared the undergrowth, saving about $72,000 which it would have cost to pay engineers to do the same job.

Ms. Lester has the tall, broad-shouldered look of a farm girl and sports a bright red baseball cap that reads "cowgirl". She's one of a group of volunteers setting up water tanks and fencing across a 200,000-hectare swath of northern Arizona. The tanks will eventually provide water to hundreds of elk, deer, antelope, and even cattle. "I mean, they gotta drink, and in this kind of drought, you've gotta bring the water to them and take care of them, because they will suffer if we don't do something out here," she says.