WASHINGTON
And on the year that humanity welcomed its eighth billion member, UN Secretary-General Antonio Guterres warned that the planet was on a “highway to climate hell.” While any Russian nuclear strike would likely involve small “tactical” weapons, experts fear a quick escalation if the United States responds.
UN experts estimated ahead of November talks in Egypt that the world was on track to warming of 2.1 to 2.9 C -- but some outside analysts put the figure well higher, with greenhouse gas emissions in 2021 again hitting a record despite pushes to renewable energy.
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