By Grace van Deelen , Eos/AGU.  Excerpt: As the midpoint of the year approaches, several climate records have already been broken. Arctic winter sea ice extent reached a record low . Several countries saw record-breaking winter heat waves. And more than 150 million hectares have already burned globally in wildfires. The increasingly likely emergence of an El Niño this summer will likely continue the year’s record-breaking weather trends and could lead to “an unprecedented year of global fire,” according to a statement from World Weather Attribution , a climate research collaboration. ...El Niño typically temporarily boosts global temperatures. ...At a press briefing on 11 May hosted by World Weather Attribution, climate scientists outlined the potential risks of this emerging El Niño against the backdrop of human-caused climate change, including intensifying wildfire seasons, extreme heat waves, and worsening droughts....  Full article at https://eos.org/research-and-develop...

By Emily Gardner , Eos/AGU.  Excerpt: Between 2000 and 2020, 42% of tree lines around the world crept upward, largely because of climate change. But 25% moved downhill, seemingly because of factors such as land use changes and wildfires. ...As the climate warms, tree lines are generally understood to move up, because regions that were previously too cold for trees to survive now have higher, more tree friendly temperatures. ...But new research , published in the International Journal of Applied Earth Observation and Geoinformation , paints a more complicated picture: Between 2000 and 2020, 42% of tree lines shifted up, true. But 25% of them actually moved downhill....  Full article at https://eos.org/articles/tree-lines-are-migrating-some-up-some-down .

By Brandon Mulder, The Texas Tribune .  Excerpt: A decade ago, wind power was surging in popularity and attracting huge investments that made Texas a national leader in renewable energy. But today, gas generation is making a big comeback, driven by a wave of data centers flooding into the state. For the last six months, the volume of gas generation in the Texas grid’s interconnection queue — the yearslong waiting list for electric generators wanting to connect to the grid — has surpassed wind. It’s the first time since January 2016 that gas has overtaken wind in the queue, a shift that reflects the policy and economic headwinds facing the wind industry and data centers favoring gas power as they seek to cash in on the artificial intelligence boom. ...Still, the queue gives an early indication of how the grid is projected to evolve in the future. Solar and battery projects dominate, accounting for 75% of the 458,000 megawatts in the queue, with gas and wind projects making up the re...

By Elise Cutts , Science.  Excerpt: VIENNA— Scientists have drilled a record-setting ice core stretching back 1.2 million years. The ancient air it contains reveals sharp swings in carbon dioxide that could help explain a mysterious shift in the rhythm of Earth’s ice ages. The core...is the culmination of 10 years of work and 2.8 kilometers of drilling in Antarctica by the European project Beyond EPICA. It provides the first direct, detailed look at how greenhouse gases varied during a critical climatic window between 800,000 and 1.25 million years ago, when Earth’s ice ages shifted from 40,000-year-long cycles to longer, more intense sequences of 100,000 years. ...The extended window has brought the mysterious Mid-Pleistocene Transition (MPT) into focus. Beginning about 2.6 million years ago, the climate swung in and out of relatively mild ice ages every 40,000 years, driven by wobbles in Earth’s orbit. But then, about 1.25 million years ago, something began to slide Earth to...

By Rosa A. Scherson  and  Federico Luebert , Science.  Excerpt: Climate change is reshaping the environmental conditions that plants must face and accelerating their extinction. Estimating how endangered plants are is important to inform conservation decisions. However, only 18% of plants are included in the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, which provides global assessments of the risk of extinction for 76,864 plant species ( 2 ). ...Although Forest  et al . and Wang  et al . used different scales of time and space and studied different (but largely overlapping) groups of plants, both studies revealed that plant extinctions do not occur randomly across geographical areas. For example, Forest  et al . reported that angiosperm [flowering] species at high extinction risk are concentrated in tropical regions and islands, such as Madagascar, Borneo, and Ecuador. Furthermore, Wang  et al. ...

By ia Weise and Ben Munster , Politico.  Excerpt: BRUSSELS — The European Union is bowing to demands from the United States and the fossil fuel industry that it scale back its efforts to fight a planet-warming superpollutant. The EU in 2021 vowed to curb emissions of methane and drew up legislation that forces the oil and gas sector to limit emissions of the powerful greenhouse gas, which is responsible for around a third of the global rise in temperatures since the industrial era.  Now, however, Brussels is poised to significantly weaken enforcement of its flagship methane regulation, granting fossil fuel companies the freedom to pollute with a focus on protecting the continent’s energy security, according to a draft document seen by POLITICO ....  Full article at https://www.politico.eu/article/under-us-pressure-eu-softens-climate-superpollutant-methane-rules/ .