Tag

Greenhouse Gases

All articles tagged with #greenhouse gases

science29 days ago•9 min saved

Antarctica's Deep Core Unlocks 1.2 Million Years of Climate History

An international team at Little Dome C, East Antarctica, drilled 2.8 km to bedrock and retrieved an ice core with a continuous climate record dating back at least 1.2 million years, extending the EPICA archive. The trapped air bubbles provide direct samples of ancient atmosphere, crucial for understanding why Earth’s glacial cycles shifted during the Mid-Pleistocene Transition. Gas measurements, isotope data, and dating (including krypton-81) are being processed across labs, with some bottom ice possibly older but not perfectly in chronological order. The result is a direct atmosphere-to-temperature record that will help identify the drivers of the planet’s changing ice-age rhythm, beyond the influence of industrial emissions.

via Space Daily|

#antarctica #climate-history #greenhouse-gases

environment2 months ago•2 min saved

Siberia's Expanding Megaslump Reveals Ice-Age Remains and Climate Clues

The Batagay megaslump in Siberia is widening as permafrost thaws, releasing greenhouse gases and unearthing ice-age fossils such as a 50,000-year-old mammoth and an ancient horse, highlighting climate feedback risks and ongoing paleontological discoveries.

via BBC Wildlife Magazine|

#batagay-crater #environment #greenhouse-gases

science3 months ago•5 min saved

40,000-Year-Old Microbes Reawaken in Alaskan Permafrost, Stir Climate Implications

Scientists thawed 40,000-year-old microbes from an Alaska permafrost tunnel and found them awakening after six months, forming biofilms and indicating life can resume after long dormancy; this slow reactivation could release carbon dioxide and methane as permafrost thaws, complicating climate models.

via The Daily Galaxy|

#biofilms #climate-change #greenhouse-gases

world5 months ago•6 min saved

Earth’s Energy Imbalance Reaches Record High as Climate Emergency Deepens

The World Meteorological Organization’s State of the Global Climate report warns Earth is in a climate emergency, with the planet’s energy imbalance at a record high as greenhouse gas concentrations trap more heat; heat is accumulating primarily in the oceans, driving record temperatures and increasing droughts, heatwaves, floods and other impacts, underscoring the need for a rapid shift to renewable energy to protect climate and security.

via Inside Climate News|

#climate-emergency #energy-imbalance #greenhouse-gases

science5 months ago•32 min saved

Ancient ice records reveal stable greenhouse gas levels over 3 million years

New shallow Allan Hills blue-ice cores extend greenhouse-gas records to about 3.1–0.5 million years ago. They show mean CH4 changing little over the period, with CO2 falling by ~20 ppm from 2.9 to 1.2 Ma and then staying stable within ±10 ppm through the mid‑Pleistocene Transition; respiration-corrected samples from 2.8–3.1 Ma yield CO2 of 250 ± 10 ppm, indistinguishable from the early Pleistocene. These results suggest long‑term stability of atmospheric CO2 and CH4 and demonstrate that ice-core gas measurements can be extended into the late Pliocene, providing snapshots of climate during a era of global cooling.

via Nature|

#ch4 #climate-science #co2

politics6 months ago•18 min saved

Climate groups sue EPA over repeal of greenhouse-gas protections

Public health and environmental groups filed a lawsuit against the EPA challenging the repeal of a greenhouse-gas rule that supported climate protections, arguing the rollback undermines emissions controls and public health safeguards.

via Associated Press News|

#climate-policy #environmental-health #epa

science7 months ago•5 min saved

Global Warming and the Potential for a Future Ice Age

The next ice age is unlikely to begin for at least 50,000 years, with natural climate cycles and human-induced greenhouse gas emissions delaying its onset significantly, potentially up to 500,000 years in the future.

via ScienceNorway|

#climate-cycles #greenhouse-gases #holocene

environment8 months ago•2 min saved

New Study Reveals Hydrogen's Limited Climate Benefits and Global Budget Challenges

A study published in Nature warns that hydrogen, often seen as a clean energy source, may contribute to climate change by prolonging methane's presence in the atmosphere, thus slightly increasing global temperatures. The rise in hydrogen emissions, mainly from human activities like industrial leaks and fossil fuel use, indirectly enhances warming by reducing atmospheric detergents that break down methane, highlighting the need for a deeper understanding of hydrogen's role in climate dynamics.

via ScienceAlert|

#climate-change #environment #global-warming

environment9 months ago•1 min saved

Global Carbon Emissions Set to Hit Record High in 2025

Global fossil fuel emissions are projected to reach a record high of 38.1 billion tons in 2025, with overall emissions increasing slightly from 2024, although China shows signs of slowing its emissions growth.

via The New York Times|

#carbon-emissions #china #climate-change

science10 months ago•1 min saved

Ancient Microbes Resurrected from Permafrost Raise Climate Concerns

Researchers have revived microbes frozen for 40,000 years in Alaskan permafrost, raising concerns that warming temperatures could reactivate these microbes, leading to increased greenhouse gas emissions and further climate warming.

via The Daily Beast|

#alaska #climate-change #greenhouse-gases

science10 months ago•3 min saved

Ancient Microbes Resurrected from Permafrost Release CO2, Raising Climate Concerns

Scientists have revived microbes from 40,000-year-old Alaskan permafrost, which, when active, release carbon dioxide and methane, potentially accelerating climate change as Arctic warming continues and permafrost thaws.

via Indian Defence Review|

#arctic #climate-change #greenhouse-gases

science10 months ago•4 min saved

Ancient Permafrost Microbes Resurrected, Emitting CO2

Scientists have reawakened ancient microbes from permafrost dating back to the last ice age, which can become active within months under warmer Arctic summer conditions, potentially releasing significant amounts of CO2 and methane, thus accelerating global warming and permafrost thawing.

via Live Science|

#arctic #climate-change #greenhouse-gases

science10 months ago•2 min saved

Ancient Microbes Resurrected from Permafrost Reveal Climate Change Insights

Microbes trapped in 40,000-year-old permafrost in Alaska have been reawakened due to thawing, potentially releasing significant greenhouse gases like methane and carbon dioxide as climate change accelerates Arctic melting, with microbes showing increased activity after prolonged warm periods, raising concerns about a feedback loop that could further accelerate global warming.

via ScienceAlert|

#arctic #climate-change #greenhouse-gases

science1 year ago•3 min saved

Deep-sea microbes form electrical networks to filter methane, study finds

Scientists discovered that microbes form living electrical networks involving anaerobic methanotrophic archaea and sulfate-reducing bacteria, which work together to consume methane from the ocean floor, potentially reducing greenhouse gas emissions and influencing Earth's systems.

via Phys.org|

#electrical-networks #greenhouse-gases #methane

world1 year ago•0 min saved

Trump broadens tariffs to enhance national security

Internal government documents reveal that President Trump’s use of tariffs extended beyond economic interests to include national security goals, such as influencing international efforts on greenhouse gas emissions and trade negotiations with maritime nations.

via The Washington Post|

#greenhouse-gases #national-security #tariffs