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These numbers show that awareness of global warming was increasing in the United States. [300] A Gallup poll showed that 62% of Americans believe that the effects of global warming were happening in 2017. [301] In 2019, Gallup poll found that one-third of Americans blame unusual winter temperatures on climate change. [302]
Looking down from the Hollywood Hills, with Griffith Observatory on the hill in the foreground, air pollution is visible in downtown Los Angeles on a late afternoon.. Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere that cause harm or discomfort to humans or other living organisms, or damage ecosystems.
Oil companies have known since the 1970s that burning oil and gas could cause global warming but nevertheless funded deniers for years. [ 23 ] [ 24 ] Despite the support of a clear scientific consensus , as recently as 2021 one-third of Americans deny that human-caused climate change exists [ 25 ] although the majority are concerned or alarmed ...
The state of Connecticut passed a number of bills on global warming in the early to mid 1990s, including—in 1990—the first state global warming law to require specific actions for reducing CO 2. Connecticut is one of the states that agreed, under the auspices of the New England Governors and Eastern Canadian Premiers (NEG/ECP), to a ...
Plastic pollution is wreaking havoc on both the environment and human health. Microplastics, which come from the breakdown of plastic waste, are now found in 26% of marine fish—double the amount from just a decade ago. This environmental damage extends to wildlife, with species like turtles, fish, and seabirds suffering from ingesting plastic.
Obama took several steps to combat global warming, but was unable to pass a major bill addressing the issue, in part because many Republicans and some Democrats questioned whether global warming is occurring and whether human activity contributes to it. [59]
As public awareness and the environmental sciences have improved in recent years, environmental issues have broadened to include key concepts such as "sustainability" and also new emerging concerns such as ozone depletion, global warming, acid rain, land use and biogenetic pollution.
Growing evidence that air pollution—even when experienced at very low levels—hurts human health, led the WHO to revise its guideline (from 10 μg/m 3 to 5 μg/m 3) for what it considers a safe level of exposure of particulate pollution, bringing most of the world—97.3 percent of the global population—into the unsafe zone.