Sam's News — conservation — 2026-09-18¶
Conservation¶
7 President of the United States rolls back endangered species protections; Canadian wildlife also at risk¶
The president of the United States's administration rescinded a decades-old definition of "harm" under the Endangered Species Act, weakening habitat protections effective September 14. Canadian wildlife experts warned the change threatens transboundary species including migratory birds, grizzly bears, and orcas.
- Changed definition of 'harm' to exclude habitat degradation impacts
- Effective date: September 14, 2026
- Supreme Court had upheld original definition in mid-1990s
- Threatened transboundary species: migratory birds, spotted owls, grizzly bears, orcas
- Lawsuits filed: nearly a dozen conservation groups challenging repeal
Sources: CBC News AI Web Searched, CBC Web Search
6.5 Recovering America's Wildlife Act: conservation funding and species recovery benefits¶
Overview of the Recovering America's Wildlife Act's potential to fund state wildlife conservation programs and species recovery efforts.
Sources: The Nature Conservancy Web Search
6.5 Endangered Species Act enforcement and critical habitat protection strategies¶
Examination of approaches to strengthen Endangered Species Act implementation and protect critical habitats for species survival.
Sources: Turtle Island Restoration Network Web Search
6.5 America's retreat from wildlife protection will have far-reaching impacts¶
Reduced U.S. wildlife protection efforts are expected to have consequences extending beyond national borders.
Sources: Mongabay Web Search
Neurology¶
7 Glial PD-1/PD-L1 targeting restores microglial function in Alzheimer's model¶
Science Advances research shows that targeting glial PD-1/PD-L1 immune checkpoint pathways reduces neuronal hyperactivity and restores microglial homeostasis in Alzheimer's disease models. The work addresses neuroinflammation through modulation of microglial function.
- PD-1/PD-L1 immune checkpoint targeted as therapeutic approach
- Reduces neuronal hyperactivity in Alzheimer's models
- Restores microglial homeostasis
- Addresses neuroinflammation through glial cell modulation
Sources: Science Advances RSS
Cancer Research¶
7 High-density CRISPR activation platform maps cancer dependencies and resistance pathways¶
A high-density CRISPR activation platform described in Science Advances enables identification of cancer vulnerabilities and resistance mechanisms through functional genomics screening both in cell culture and in vivo. The technology has uncovered genes driving drug resistance in blood cancers.
- High-density CRISPR activation platform for cancer screening
- Maps cancer dependencies and drug resistance pathways
- Functional genomics in culture and in vivo
- Applied to blood cancer resistance mechanisms
Sources: Science Advances RSS
Planetary Science¶
7 Mars possessed plagioclase-rich protocrust formed by magma ocean crystallization¶
Science Advances analysis suggests Mars early crust was plagioclase-rich and formed by crystallization of a global magma ocean.
Sources: Science Advances RSS
Immunology¶
7 Epigenetic training confers metabolic fitness and enhanced function to naive CD8+ T cells¶
Research demonstrates that epigenetic modifications can enhance naive CD8+ T cells with improved metabolic fitness and functional capacity. The epigenetic training approach has potential relevance for immunotherapy applications.
- Epigenetic modifications enhance naive CD8+ T cells
- Improves metabolic fitness and functional capacity
- Applicable to immunotherapy development
Sources: Science Advances RSS
Astrophysics¶
6.5 Direct spectroscopic observation of matter accretion onto compact stellar object¶
Science Advances publication reports direct spectroscopic evidence of matter falling onto a compact star.
Sources: Science Advances RSS
Meteorology¶
6.5 Stratospheric wave predictability improves surface weather forecasts over North America¶
Study shows that stratospheric wave dynamics significantly enhance the predictability of surface weather patterns across North America.
Sources: Science Advances RSS