South America—the last continent to be settled—was peopled in surprisingly complex way
Genetically diverse groups arrived in three waves, some potentially carrying genes acquired from long-ago Australasian ancestors
Observations from the Little Bunker
A systematic observation of climate change, extreme weather events, and their cascading effects on society
🌍 Latest Environmental Observations
To phase out fossil fuels, developing countries need exit route from 'debt trap'
High levels of national debt in parts of the Global South could hinder efforts to move away from fossil fuels, a new report warns, as...
Columbia Beautiful Planet 2026
Once again, we honor Earth Day by sharing some amazing photos celebrating the beauty and magic of our planet, as captured by the Columbia community....
Space-based observation of global increase in urban methane emissions from 2019–2023
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceCities are large emitters of methane, a potent greenhouse gas and precursor...
Science for the Planet: Turning Waste Into Critical Materials
Greeshma Gadikota and her team explore how materials that might otherwise be landfilled can be transformed into products needed for solar energy and other critical...
Anthony Fauci makes acting debut in Oedipus the King play reading in DC
Fauci was joined by actor Jesse Eisenberg and top Senate Democrat Chuck Schumer in reading for DC Climate WeekWhen Anthony Fauci put on a pair...
Sulfated polysaccharide reprograms arterialized angiogenesis of endochondral ossification to rescue defective osteonecrosis therapy
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificancePersistent arteriogenesis during the repair process is critical for the treatment of...
Alternative splicing of the Rbm24 gene is essential for cochlear hair cell stereocilia integrity and hearing function in mice
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceMechanotransduction of cochlear hair cells relies on stereocilia, the F-actin-filled cell protrusions...
Cropped 22 April 2026: Global food 'catastrophe' | BECCS emissions | UK solar farm controversy
We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight. This is an online...
Feds Fine Durham-Based Energy Efficiency Company $722 Million
American Efficient says it was helping incentivize energy savings at major companies. One member of the Federal Energy Regulatory Commission said that the company’s ‘entire...
EU plans to cut electricity taxes to shield households from Iran war energy crisis
Brussels will relax state aid rules to allow member countries to offer ‘targeted and temporary’ supportEurope live – latest updatesThe EU will cut electricity taxes...
Sustainable Wood Schemes Failing to Slow Deforestation
Schemes that certify wood or paper as sustainable are doing little to stem the loss of forests globally, a study finds.Read more on E360 →...
Promising climate progress from net-zero ambitions to the Paris Agreement goal
Nature Climate Change, Published online: 22 April 2026; doi:10.1038/s41558-026-02615-yIt is important to assess the gap between national climate ambitions and the goal of limiting global...
Southern Ocean seabird population shifts over the Holocene revealed by peat sequestration of mercury from guano
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceThe Southern Ocean is home to vast seabird populations and threatened species....
Cell wall remodeling–dependent morphotype switch in Mycobacterium avium differentially regulates colonization and tissue persistence
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceMycobacterium aviumcan switch between two primary colony morphologies—smooth transparent (SmT) and smooth...
Sweden increases humanitarian support to Lebanon
Countries: Lebanon, Sweden Source: Government of Sweden Sweden is announcing an additional humanitarian support package to Lebanon of SEK 70 million. The support is being...
World: Humanitarian Action Rooted in Community - Earth Day Reflections at Start Network
Countries: World, Guatemala, Indonesia, occupied Palestinian territory, Philippines, South Sudan Sources: Catholic Agency for Overseas Development, ELRHA, Start Network, Yakkum Emergency Unit Please refer to...
World: Extreme heat and agriculture - FAO–WMO joint report
Country: World Sources: Food and Agriculture Organization of the United Nations, World Meteorological Organization Please refer to the attached file. Extreme heat is pushing agrifood...
World: Community-Led Innovation Partnership - Innovation Catalogue (Last Updated : March 2026)
Countries: World, Guatemala, Indonesia, Philippines, South Sudan Sources: Catholic Agency for Overseas Development, ELRHA, Start Network, Yakkum Emergency Unit Please refer to the attached file....
Epigenetic constraints and enhancer innovation link neuronal plasticity to evolutionary adaptation
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceHow do nervous systems evolve new cell types while maintaining core functions?...
A plasma-based DNA test for quantification of disease burden in acute myeloid leukemia patients undergoing bone marrow transplantation
Proceedings of the National Academy of Sciences, Volume 123, Issue 16, April 2026. SignificanceWe report a blood test that tracks up to 96 patient-specific mutations...
Niger : Mécanisme de Réponse Rapide (RRM) - Aperçu mars 2026
Country: Niger Sources: Action contre la Faim France, Agency for Technical Cooperation and Development, Danish Refugee Council, Government of Niger, International Rescue Committee, UN Children’s...
Weekly Security Report: Lebanon Operational Assessment | April 13 - 19, 2026
Country: Lebanon Source: SARI Global Please refer to the attached file.
Nearly half of US children are breathing dangerous levels of air pollution, report warns
American Lung Association report comes amid Trump EPA’s expansive rollback of environmental protections Nearly half of children in the United States are breathing dangerous levels...
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