Search Results for: grassland
401 results
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The human story
A century ago, it wasn’t obvious where humans got their start. But decades of fossil discoveries, reinforced by genetic studies, have pointed to Africa as our homeland.
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ArchaeologyA Siberian cave contains clues about two epic Neandertal treks
Stone tools and DNA illuminate an earlier and a later journey eastward across Asia.
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Climate5 things to know about fighting climate change by planting trees
One group’s idea of planting vast swaths of trees to curb climate change exaggerates the proposal’s power to trap carbon, some argue.
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EcosystemsWill Australia’s forests bounce back after devastating fires?
Intense bushfires that have blazed down Australia’s eastern coast could have long-lasting effects on the continent’s unique plants and animals.
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HumansDNA indicates how ancient migrations shaped South Asian languages and farming
Farming in the region may have sprung up locally, while herders from afar sparked language changes.
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EcosystemsPlanting trees could buy more time to fight climate change than thought
Earth has nearly a billion hectares suitable for new forests to start trapping carbon, a study finds.
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PlantsSome plants use hairy roots and acid to access nutrients in rock
Shrubs in mountainous areas of Brazil have specialized roots that secrete chemicals to extract phosphorus from rock.
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ArchaeologyExcavations show hunter-gatherers lived in the Amazon more than 10,000 years ago
Early foragers may have laid the foundation for farming’s ascent in South America’s tropical forests.
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AnimalsHippo poop cycles silicon through the East African environment
By chowing down on grass and then excreting into rivers and lakes, hippos play a big role in transporting a nutrient crucial to the food web.
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GeneticsDNA reveals early mating between Asian herders and European farmers
A new genetic analysis could upend assumptions about the origins of Indo-European languages.
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LifeWe’ve lost 3 billion birds since 1970 in North America
Scientists estimated the change in total number of individual birds since 1970. They found profound losses spread among rare and common birds alike.
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LifeConnecting our dwindling natural habitats could help preserve plant diversity
As pristine habitats shrink worldwide, a massive, 18-year experiment suggests that linking up what's left with natural corridors could help ecosystems retain plant diversity.