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Beyond biodiversity: A new way of looking at how species interconnect.

In a development that has important implications for conservation, scientists are increasingly focusing not just on what species are present in an ecosystem, but on the roles that certain key species play in shaping their environment.

In 1966, an ecologist at the University of Washington named Robert Paine removed all the ochre starfish from a short stretch of Pacific shoreline on Washington’s Olympic Peninsula. The absence of the predator had a dramatic effect on its ecosystem. In less than a year, a diverse tidal environment collapsed into a monoculture of mussels because the starfish was no longer around to eat them.

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Wildfires: How they form, and why they're so dangerous.

Everything you need to know about wildfires.

As deadly wildfires continue to rage across Northern California’s wine country, with winds picking up speed overnight and worsening conditions to now include a combined 54,000 acres of torched land, it now seems more important than ever to understand how wildfires work, and their lasting implications on our health and the environment.

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Record Amazon fires stun scientists; sign of sick, degraded forests.

Scientists warn of a dangerous synergy: forest degradation has turned the Amazon from carbon sink to carbon source; while globally, humanity’s carbon emissions are worsening drought and fires.

With the fire season still on-going, Brazil has seen 208,278 fires this year, putting 2017 on track to beat 2004’s record 270,295 fires. While drought (likely exacerbated by climate change) worsens the fires, experts say that nearly every blaze this year is human-caused.

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What needs to be done to stop wildfires in drought-killed forests.

A century of fire suppression followed by the worst drought in recorded history has put California’s forest landscapes and water supply at risk.

WITH 17 LARGE wildfires in California igniting in 24 hours this week, October is shaping up to be a brutal month for wildfires, as it often is. It’s too soon to know what caused multiple conflagrations spreading across Northern California’s wine country, but elsewhere in the state dead and dying trees have been the subject of much concern. The five-year drought in California killed more than 102 million trees on national forest lands. That is a gigantic problem in itself that will lead to huge wildfire risks in the future and big changes in wildlife habitat.

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California’s hot summer set the stage for deadly wildfires.

The fires sweeping through Napa and Sonoma wine country could lead to the state's worst wildfire season on record, and it’s not over yet.

As deadly wildfires sweep through California's wine country, fire management experts are blaming their violent speed on the powerful Diablo winds. But the conditions that made the fires so destructive arose from this summer's record-breaking heat—a kind that experts say will continue to fuel fires across much of the West as the planet warms.

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How California's firestorm spread so mind-bogglingly fast: From 'Diablo' winds to climate trends.

The firestorm that engulfed large parts of Napa and Sonoma Counties in California on Monday will go down in history as one of the worst such events ever recorded in the Golden State.

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Jane Goodall: "Giving up hope won't save the planet. Ending poverty might."

We haven't inherited this planet from our parents; we've borrowed it from our children.

We are destroying the world at a very rapid rate, and an awful lot of people are just giving up hope and thinking, "Well, there's nothing I can do." The rain forests are disappearing everywhere. Big dams are draining whole countries of their water supply: The famous Serengeti, in Tanzania, is threatened by a dam in Kenya; and the Nile is being threatened by a huge dam in Ethiopia. There's mining, there's fracking, there's drilling for oil. We're in the middle of the sixth great species extinction; we're losing biodiversity in place after place. We're burning fossil fuels very, very fast.

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