Farmers and meat producers across the U.S. can expect the new tariffs on Mexico, Canada and China and the retaliatory action from those countries to hurt their bottom lines by billions of dollars if they stay in place a while, and consumers could quickly see higher prices for produce and ground beef.

Countries at the United Nations climate summit amped up the pressure on themselves on Friday by entering the last scheduled day of talks with no visible progress on their chief goals.

Just as a simple lever can move heavy objects, rich nations are hoping another kind of leverage — the financial sort — can help them come up with the money that poorer nations need to cope with climate change.

For the second year in a row, Earth will almost certainly be the hottest it's ever been. And for the first time, the globe this year reached more than 1.5 degrees Celsius (2.7 degrees Fahrenheit) of warming compared to the pre-industrial average, the European climate agency Copernicus said on Thursday.

This October was the hottest on record globally, 1.7 degrees Celsius (3.1 degrees Fahrenheit) warmer than the pre-industrial average for the month — and the fifth straight month with such a mark in what will now almost certainly be the warmest year ever recorded.

Earth’s average temperature remained at a record high on Wednesday, July 5, 2023, after two days in which the planet reached unofficial records. It’s the latest marker in a series of climate-change-driven extremes.

Drifting smoke from the ongoing wildfires across Canada is creating curtains of haze and raising air quality concerns throughout the Great Lakes region and in parts of the central and eastern United States.