YouTube puts context label on White House’s video: YouTube imposed a fact-checking label on the White House’s Apr. 20 video, “President Biden Delivers Remarks at the 2023 Major Economies Forum on Energy and Climate.” YouTube put a context label that linked to the United Nations and claimed, “Climate change refers to long-term shifts in temperatures and weather patterns, mainly caused by human activities, especially the burning of fossil fuels.” A 2022 study found that atmospheric CO2 from fossil fuels was too low to cause global warming.