Climate Change ☀️
Ocean bacteria release carbon into the atmosphere
Researchers have discovered that deep-sea bacteria dissolve carbon-containing rocks, releasing excess carbon into the ocean and atmosphere. The findings will allow scientists to better estimate the amount of carbon dioxide in Earth's atmosphere, a main driver of global warming.
Read the full article: https://www.sciencedaily.com/releases/2021/04/210412194220.htm

Thawing permafrost cools Arctic currents: This might affect fish stocks
A new study finds that thawing permafrost in Alaska causes colder water in smaller rivers and streams. This surprising consequence of climate change could affect the survival of fish species in the Arctic's offshore waters.

The study's researchers discovered that thawing permafrost causes groundwater to run deeper, where it becomes cooler than when it flows near the soil surface.

Rising global temperatures are causing frozen Arctic soil -- permafrost -- to thaw. In a new study, researchers have discovered something surprising: small rivers, creeks and streams that flow into larger lakes and coastal waters seem be to getting colder as permafrost melts. The phenomenon was previously documented in Russian rivers in the Arctic. But until now, no one had studied why the water was getting colder, even as air temperatures are warming and the permafrost is thawing.
Read the full article: https://www.sciencedaily.com/releases/2021/04/210412101926.htm

Policy decisions will affect coastal communities' risk more than climate change
Coastal communities face increasing danger from rising water and storms, but the level of risk will be more closely tied to policy decisions regarding development than the varying conditions associated with climate change.

Those measures include the construction of protective structures between the beach face and the shoreline; adding sediment to beaches where access in front of those structures has been lost; removing or relocating buildings repeatedly affected by coastal hazards and turning hazard zones into conservation areas; constructing new buildings well above the base flood elevation established by the Federal Emergency Management Agency; and preventing new development in hazard zones even if those areas are within urban/community growth boundaries.

The model considered the effects of continuing current development policies, implementing only policies designed to combat environmental changes, realigning policies to be more consistent with a changing environment, and relaxing current policies such that development takes precedence over protecting coastal resources, beach access and everything else.
Read the full article: https://www.sciencedaily.com/releases/2021/04/210412101851.htm

Climate change, periodic modification of Earth’s climate brought about as a result of changes in the atmosphere as well as interactions between the atmosphere and various other geologic, chemical, biological, and geographic factors within the Earth system.

Source: Climate change - Evidence for climate change | Britannica
Climate Change is the defining issue of our time and we are at a defining moment. From shifting weather patterns that threaten food production, to rising sea levels that increase the risk of catastrophic flooding, the impacts of climate change are global in scope and unprecedented in scale. Without drastic action today, adapting to these impacts in the future will be more difficult and costly.

Source: Climate Change | United Nations