US Sen. Lindsey Graham, the longtime Republican from South Carolina, has died “from a brief and sudden illness,” a spokesperson for his office told CNN.

Like many cities, Denver's largest source of greenhouse gas emissions is its buildings. Heating and cooling skyscrapers requires a lot of fossil fuels. Now, the city is trying a surprising solution.

Twenty-nine people have died in ICE custody since October, the start of the federal government's fiscal year, already surpassing 2004's toll of 28, the previous record, according to government data.

Governments are blocking the internet, banning social media posts and cutting access to commercial satellite images. But experts say that efforts to censor information have had mixed results.

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