Ellen Nelson has battled invasive plants that out-compete native grasses on her grass-fed beef ranch near Bellvue, Colo. Some climate studies suggest that fight will worsen in the coming decades.
Credit Luke Runyon / KUNC and Harvest Public Media
Most climate models paint a bleak picture for the Great Plains a century from now: It will likely be warmer and the air will be richer with carbon dioxide. Though scientists don’t yet know how exactly the climate will change, new studies show it could be a boon to some invasive plant species.
Rain is so important in Malawi's agriculture-based economy that there are names for different kinds of it, from the brief bursts of early fall to heavier downpours called mvula yodzalira, literally "planting rain." For generations, rainfall patterns here in the southeast part of Africa have been predictable, reliable. But not now.
In the village of Jasi, in the hot, flat valley of Malawi's Lower Shire, farmer Pensulo Melo says 2010 was a disaster.