麻豆影院

The world must halt its increase in greenhouse gases within the next three years, cut them by 43% in the next seven, and eliminate them entirely by 2050 to avoid catastrophic and irreversible climate change impacts this century, according to a (IPCC). But along with dire warnings, the assessment also brings good news: We already have the tools necessary to make these changes, and they鈥檙e cheaper than ever before.听

The assessment is the third in a trilogy from the international body tasked with assessing the latest scientific research on climate change, and in addition to analyzing a wide variety of mitigation solutions, it calls for rapid, systemic change. From reduced and more efficient energy use, to the electrification of our energy grids and improving how we build and live in our cities, it makes clear the solutions are affordable and available now.

鈥淲e鈥檙e not talking about business as usual,鈥� said Working Group III Co-Chair Jim Skea at the Monday press conference unveiling the report. 鈥淲e know what to do. We know how to do it. It鈥檚 time to take action.鈥�

The 2015 Paris Climate Agreement established that in order to stem the tide of sea level rise, increasing heat waves, intensifying storms, widespread water shortages and the extinction of millions of plants and animals, global warming must be kept below 2.7 degrees Fahrenheit (1.5 degrees Celsius) above pre-industrial levels.

鈥淲e have to address inequality, focus on wellbeing, and approach this as a human rights issue, efficiently and significantly,鈥� said Max Boykoff, contributing author to the report, chair of the Department of Environmental Studies at CU 麻豆影院 and fellow at the Cooperative Institute for Research in Environmental Sciences (CIRES).

But the challenge is a daunting one. Between 2010 and 2019, average annual global greenhouse gas emissions were at their highest levels in human history, according to the report. On our current track, global average temperatures are projected to rise 5.8 F (3.2 C) above pre-industrial levels by the end of the century鈥攖wice the Paris goal.

However, the report also finds that the rate of emissions growth has slowed in the past decade and climate action is increasing.听

In the face of record inflation, rising energy prices due to the war in Ukraine and a continuing global pandemic, this timely report asserts that achieving this ambitious feat should not only be a top priority, but that mitigating climate change can also address other global needs.听

Electrify everything

The report strongly emphasizes decarbonizing the energy sector through electrification: replacing fossil fuels anywhere and everywhere possible with electric energy. Where that鈥檚 difficult, as with shipping and aviation, biofuels and alternative fuels like hydrogen can provide a temporary transition until battery technology catches up, it suggests.

This also makes economic sense, the report stresses. Since 2010, the cost of wind, solar and batteries has declined as much as 85%, and in some cases costs have fallen below those of fossil fuels.听

Continuing to create national, state and local incentives for using renewable energy will be key, said Lisa Dilling, professor of environmental studies at CU 麻豆影院 and fellow at the Cooperative Institute for Research in Environmental Sciences (CIRES).听

For instance, President Joe Biden just invoked the Defense Production Act to accelerate the U.S. transition to renewable energy and reduce carbon emissions.听

And Colorado has committed to getting more electric vehicles (EVs) on the road, through sales goals and state infrastructure policy. Such commitments, Dilling said, can incentivize manufacturers to create products that meet these policy goals.听

Municipal and county-level policies can also promote electrification through local building codes.

The report also notes that urban areas, responsible for an increasing share of the world鈥檚 population and carbon emissions since 2010, can lead the way in climate change mitigation by electrifying transportation systems and increasing buildings鈥� energy efficiency.听

Chuck Kutscher, fellow at CU 麻豆影院鈥檚 Renewable and Sustainable Energy Institute (RASEI), echoes this immediate focus on electrified vehicles, electrifying new building construction, and increasing the deployment of wind, solar and batteries on the electric grid.听

But Kutscher and Dilling acknowledge that this transition will come with logistical, economic and cultural challenges. Exacerbating that challenge is the fact that, as temperatures rise due to climate change, we will need energy to keep ourselves cool.

鈥淚t鈥檚 not an overnight transition. Our lives are built around using energy,鈥� said Dilling. 鈥淏ut we have all these other options now that are cost effective. We don鈥檛 have to get it out of the ground anymore.鈥�

Carbon removal and storage

While the authors note for the first time in a major IPCC report that anthropogenic carbon dioxide removal strategies will be necessary to meet the Paris Agreement, they emphasize that carbon capture and storage technologies still 鈥渞equire more research, up-front investment, and proof of concept,鈥� before implementation at scale is possible.

鈥淭here is no silver bullet. Any meaningful global solution will likely be a combination of multiple mitigation strategies,鈥� said Oana Luca, assistant professor of chemistry and RASEI fellow-elect.

The report recommends improved, equitable land use and 鈥渘atural carbon storage鈥� options, like planting trees and using farming methods that sequester carbon in soil, over high-tech tools to reduce and trap emissions.听

While methods to directly capture carbon dioxide from the air do exist, and in some places at scale, they are immensely energy intensive, said Luca, who studies electrochemical carbon capture.听

鈥淚t doesn鈥檛 make sense to deploy direct air capture at scale until renewable electricity has replaced fossil fuel power plants,鈥� said Kutscher.听

Harness the power of media听

The report also acknowledges journalists and communicators as key players in the mitigation of climate change, as the general public is less likely to read the several hundred-page report than to turn on the TV, radio, listen to a podcast or read a written article about it.

鈥淭his report takes into account the critical role media plays in our society,鈥� said Boykoff, lead project investigator of the (MeCCO), an international, multi-university collaboration based at CU 麻豆影院.听

Boykoff and MeCCO鈥檚 contribution in the report highlights the role media play in shaping public discourse and accelerating climate action. He points out that media coverage of climate change has been growing, and media representation of climate science has become more accurate over time.听

But on the flip side, Boykoff notes, scientifically misleading information can fuel polarization.听

鈥淲e rely on the media to address these stories,鈥� said Boykoff. 鈥淚t鈥檚 good to recognize the critical roles and responsibilities that journalists and editors have in communicating these intersecting challenges.鈥澨�

From pledges to action

The IPCC will complete a synthesis report in September, and collectively this report and its two predecessors from the past year will inform the international climate change conference COP27 in Egypt in November 2022. 听

It鈥檚 now up to governments, policymakers and investors to implement changes, and quickly. Even taking into account current climate pledges from nations around the world, the globe is on track for a 14% increase in emissions this decade鈥攕ending us in the wrong direction.听

鈥淭his report demonstrates the wide chasm between talk and policy,鈥� said Boykoff.听

Report authors also condemned the building of any new fossil fuel infrastructure, arguing that it will soon become obsolete, negatively impacting investments and the economy.听

This comes within two weeks of the White House announcing that the U.S. will rapidly increase exports of liquefied natural gas to Europe, release up to 180 million barrels of oil from a strategic reserve, and consider exemptions to a ban on financing of new carbon-intensive fossil fuel projects overseas to counteract the impact of Russia鈥檚 invasion of Ukraine on energy markets.听

United Nations Secretary-General 听had sharp words during Monday鈥檚 press conference on the report, for governments who say one thing, but do another, when it comes to climate action.

鈥淐limate activists are sometimes depicted as dangerous radicals. But the truly dangerous radicals are the countries that are increasing the production of fossil fuels,鈥� said Guterres. 鈥淚t's time to stop burning our planet and start investing in abundant renewable energy all around us.鈥澨�