[us President Joe Biden stressed the need for measures such as emission reduction in his speech on the climate crisis]-- US President Joe Biden delivered a speech on the climate crisis in California on June 19, local time. He elaborated on the current pollution and impact of greenhouse gas emissions on the United States, indicating the damage to American people and property caused by extreme weather caused by climate change, and further emphasized the need to reduce emissions and invest in clean energy. Biden said that investment in clean energy and infrastructure will not only improve the natural environment and alleviate the climate crisis, but also create more jobs in the United States.