As nations convene for the United Nations Conference of the Parties, or COP26, in Glasgow, Scotland, their pledges to reduce greenhouse gas emissions will, if fulfilled, shape Earth’s climate over the next century and beyond. A new study in the journal Science finds the recent pledges could eliminate the chance of global temperature change rising to 4°C, bringing the goal of limiting warming to 2°C closer to fruition.
The scientists developed nanoscale copper wires with specially shaped surfaces to catalyze a chemical reaction that reduces greenhouse gas emissions while generating ethylene — a valuable chemical simultaneously.
Hydrofluorocarbons (HFCs), as the name suggests, are compounds containing hydrogen, fluorine, and carbon. They are used for residential and commercial heating, ventilation, and air conditioning (HVAC) as refrigerants, by firefighters as a fire suppressant, and in aerosols as propellants.
For Chicago, the best-case scenario is that electricity use increases by 12% and water use increases by 4% if global warming crosses a 1.5°C threshold. But if a 2.0°C threshold is reached, then the worst-case scenario is a 20% increase in electricity use and a 6% increase in water use.