article on global warming a preventable disaster
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Weather and wildfires share a close relationship. Certain weather conditions are known to ignite wildfires: High temperatures and low humidity dry out the landscape, lightning strikes can spark a flame, and fast-moving winds spread flames across nearby desiccated land.
But wildfires also spawn their own weather systems, including pyrocumulonimbus clouds—which NASA has called the “fire-breathing dragon of clouds” for the thunderbolts they hurl at Earth, fueling further blazes and sometimes even fire tornadoes.
Fire weather has contributed to the scale of several historic conflagrations, including the 2009 Black Saturday bushfires that burned more than a million acres across Australia, and the wildfires across the West Coast of the United States in 2020. Here’s what causes firestorms—and why they’re becoming more common in a warming world.
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The evidence that humans are causing climate change, with drastic consequences for life on the planet, is overwhelming, but the question of what to do about it remains controversial. Economics, sociology, and politics are all important factors in planning for the future.
A global conversation that began with concern over warming has now turned to the broader term climate change, preferred by scientists to describe the complex shifts now affecting our planet’s weather and climate systems. Climate change encompasses not only rising average temperatures but also extreme weather events, shifting wildlife populations and habitats, rising seas, and a range of other impacts. All of these changes are emerging as humans continue to add heat-trapping greenhouse gases to the atmosphere.
Countries around the world acknowledged the imperative to act on climate change with the Paris Agreement in 2015, making pledges to reduce greenhouse gas pollution. The Intergovernmental Panel on Climate Change (IPCC), which synthesizes the scientific consensus on the issue, has set a goal of keeping warming under 2 degrees Celsius (3.6 Fahrenheit) and pursuing an even lower warming cap of 1.5 degrees Celsius (2.7 Fahrenheit).
Both of those targets are in jeopardy. Major countries are already falling behind on their pledges, according to a UN report issued at the end of 2018, and emissions levels in 2030 need to be approximately 25 to 55 percent lower than they were in 2017. Previous research suggests that even if countries do meet their pledges to reduce emissions, those commitments won't be enough to stave off severe warming.
CAUSES AND EFFECTS OF CLIMATE CHANGE
What causes climate change (also known as global warming)? And what are the effects of climate change? Learn the human impact and consequences of climate change for the environment, and our lives.
What can be done?
Addressing climate change will require many solutions—there's no magic bullet. Yet nearly all of these solutions exist today, and many of them hinge on humans changing the way we behave, shifting the way we make and consume energy. The required changes span technologies, behaviors, and policies that encourage less waste and smarter use of our resources. For example, improvements to energy efficiency and vehicle fuel economy, increases in wind and solar power, biofuels from organic waste, setting a price on carbon, and protecting forests are all potent ways to reduce the amount of carbon dioxide and other gases trapping heat on the planet.