We humans are all too good at putting carbon dioxide into the atmosphere. Can we come up with a way to vacuum it out?
A zero-emissions target may seem inflexible, but it’s actually much more actionable than a variable and uncertain emissions budget. It is relatively simple for each country to set a target date to reach zero emissions, based on, say, how wealthy it is. Then, each greenhouse-gas emitting entity in the country can set its own goal to reach zero emissions and governments can lay out effective policies to help emitters get there by the target date.
There are certain axioms about the natural world we learn as children. The sea is salty. Plants grow toward light. Bears hibernate in winter.
But as climate change leads to warmer winters, later falls and earlier springs — which can disrupt both food supplies and biological rhythms — American black bears are changing their hibernation routines, scientists say. In some cases, bears are not hibernating at all, staying awake all winter. In others, bears are waking from their slumber too early.
Central bankers have been dubbed “masters of the universe” for the tools and powers they have acquired since the financial crisis. Some of them now want to play a more active role in the fight against climate change.
The Environmental Defense Fund on Wednesday announced a plan to build and launch a satellite that will measure major global sources of methane, including 50 oil-and-gas regions that make up about 80 percent of production, as well as feedlots and landfills.
The world’s greatest forests could lose more than half of their plant species by the end of the century unless nations ramp up efforts to tackle climate change, according to a new report on the impacts of global warming on biodiversity hotspots.
Every summer for the last eight years, people who live in the Swiss Alps have been wrapping a beloved glacier in blankets.
Even if carbon emissions are curbed and rising temperatures are constrained, many scientists expect sea level rise to continue for some time. New research suggests sea level rise could last 300 years.
Could the problem of global warming become so desperate that humans would be willing to take the vast risk of re-engineering our environment? It’s far from a desirable or lasting solution. Yet some scientists have thought deeply about it and concluded that’s what we’ll probably do.