Climate Change 101 with Bill Nye | National Geographic
Summary
TLDRClimate change, a critical and real issue, is characterized by a rapid increase in Earth's temperature, which has risen 1.2 to 1.4 degrees Fahrenheit in the last century. Human activities, particularly since the Industrial Revolution, have significantly contributed to this through increased greenhouse gas emissions from burning fossil fuels. These gases trap heat, leading to devastating effects such as ocean warming, acidification, and rising sea levels, which threaten marine life and coastal regions. Extreme weather events are also on the rise. Despite the severity, individuals can contribute to the solution by recycling, using public transport, reducing meat consumption, and spreading awareness.
Takeaways
- đ Climate change is a significant and real issue, not just a buzzword.
- đĄïž The Earth's temperature has risen 1.2 to 1.4 degrees Fahrenheit in the last century, which is an abrupt increase.
- âïž 97% of climate scientists agree that human activities, not natural variations, are likely causing this change.
- đ Since the Industrial Revolution, advancements in technology and increased consumption of natural resources have led to the release of more greenhouse gases.
- đł Greenhouse gases, both naturally occurring and those from burning fossil fuels, trap heat and contribute to global warming.
- đ Climate change has increased ocean temperatures, leading to devastating consequences such as ocean acidification.
- đ Ocean acidification puts calcifying species like oysters, clams, and corals at risk, threatening the entire ocean food web.
- đ Sea levels have risen 6.7 inches in the last century, with the rate nearly doubling in the last decade due to warmer oceans and melting ice.
- đïž Melting glaciers contribute to rising sea levels, causing coastal flooding and impacting human settlements.
- â Increased extreme weather events like floods, tornadoes, and heat waves are a direct consequence of climate change.
- đ± Personal actions such as recycling, using public transportation, reducing meat consumption, and eating locally grown food can help mitigate climate change.
- đą Spreading awareness and knowledge about climate change is crucial for collective action towards a solution.
Q & A
What is the main difference between historical climate changes and the current climate change?
-Historically, climate changes were caused by small variations in the Earth's orbit, while the current climate change is characterized by an abrupt increase in Earth's temperature due to human activities.
How much has the Earth's temperature increased in the last century?
-The Earth's temperature has increased by approximately 1.2 to 1.4 degrees Fahrenheit in the last century.
What percentage of climate scientists agree that recent climate change is likely caused by human activities?
-97% of climate scientists agree that recent climate change is very likely caused by human activities.
What human activities have contributed to the increase in greenhouse gases?
-Modern human activities such as burning fossil fuels have increased the release of non-naturally occurring greenhouse gases into the atmosphere.
What role do greenhouse gases play in climate change?
-Greenhouse gases trap heat radiated from the Sun, and the more heat they trap, the warmer our planet gets, leading to climate change.
What has been the impact of climate change on the oceans?
-Climate change has increased the global temperature of the oceans, caused ocean acidification, and led to a rise in sea levels, all of which have devastating consequences for marine life and coastal communities.
What is ocean acidification, and how has it affected marine life?
-Ocean acidification is a direct effect of increased dissolved CO2, leading to a 30% increase in surface acidification since the late 18th century. This higher acid content puts calcifying species like oysters, clams, and corals at risk, impacting the entire ocean food web.
By how much have sea levels risen in the last century, and what are the recent trends?
-Sea levels have risen by 6.7 inches in the last century, with the rate of rise nearly doubling in the last decade.
What are some of the extreme weather events linked to climate change?
-Increased extreme weather events linked to climate change include natural disasters like floods, tornadoes, and deadly heat waves.
What are some personal actions individuals can take to help combat climate change?
-Individuals can help combat climate change by recycling and reusing items, using public transportation or walking, turning off electronics when not in use, eating less meat, consuming locally grown vegetables and foods, and spreading knowledge about climate change.
Outlines
đ Climate Change: A Real and Urgent Issue
This paragraph introduces climate change as a significant and genuine concern, contrary to being just a buzzword. It explains that while the Earth's climate has always experienced slight changes due to variations in its orbit, the current issue is characterized by a rapid increase in temperature. The script highlights that the Earth has warmed by 1.2 to 1.4 degrees Fahrenheit in the last century alone, with the warmest years on record being in the last 13. It emphasizes that 97% of climate scientists concur that human activities, not natural variations, are the main drivers behind this trend, particularly since the Industrial Revolution. The paragraph also points out the increased consumption of natural resources and the release of greenhouse gases as a result of human advancements.
đĄïž The Impact of Climate Change on Our Planet
This section delves into the effects of climate change, particularly on our oceans. It discusses how the global temperature of oceans has risen by more than 0.3 degrees Fahrenheit since 1969, leading to ocean acidification, which is detrimental to marine life, especially calcifying species. The paragraph also addresses the rising sea levels, which have increased by 6.7 inches in the last century, with the rate nearly doubling in the last decade. This rise is attributed to the warming and swelling of oceans and the melting of glaciers and ice sheets, which contribute to flooding in coastal regions. The paragraph concludes by mentioning the increased frequency of extreme weather events and natural disasters, which have a direct impact on human lives and are more readily apparent due to media coverage.
đ± Personal Actions to Combat Climate Change
The final paragraph of the script focuses on the potential solutions and actions individuals can take to mitigate climate change. It suggests practical steps such as recycling and reusing items, opting for walking or public transportation, turning off electronics when not in use, reducing meat consumption, and eating more locally grown produce. The paragraph emphasizes the importance of spreading awareness and educating others about the issue. It concludes with a hopeful message that while humans have contributed to the problem, they also have the power to be part of the solution.
Mindmap
Keywords
đĄClimate Change
đĄGreenhouse Gases
đĄIndustrial Revolution
đĄOcean Acidification
đĄSea Level Rise
đĄExtreme Weather Events
đĄNatural Resources
đĄFossil Fuels
đĄSustainability
đĄPersonal Action
Highlights
Climate change is a real and serious issue, not just a buzzword.
Earth's climate has historically changed due to small variations in its orbit.
Modern climate change is characterized by an abrupt increase in Earth's temperature.
The Earth has warmed 1.2 to 1.4 degrees Fahrenheit in the last century.
10 out of the last 13 years were the warmest on record.
97% of climate scientists agree that human activities are likely causing the current climate change.
The Industrial Revolution marked the beginning of increased human impact on the climate.
Human activities have led to increased consumption of natural resources and greenhouse gas emissions.
Greenhouse gases trap heat from the Sun, leading to a warmer planet.
Oceans are major victims of climate change, with increased global temperatures and acidification.
Ocean acidification since the late 18th century has increased by 30%, threatening marine life.
Sea levels have risen 6.7 inches in the last century, with an accelerated rate in the last decade.
Melting glaciers and ice sheets contribute to rising sea levels and coastal flooding.
Climate change is linked to increased extreme weather events and natural disasters.
Individual actions can help mitigate climate change, such as recycling, using public transport, and eating less meat.
Spreading knowledge and concerns about climate change is crucial for collective action.
While humans are part of the cause of climate change, they can also be part of the solution.
Transcripts
we hear it so much that it feels like a
buzzword but it is far from it climate
change is a real and serious issue but
isn't the climate always changing
what exactly is climate change why
should we care
well the Earth's climate has changed
throughout history most of these slight
changes are caused by small variations
in the Earth's orbit but climate change
as we know it today is characterized by
an abrupt increase in the earth's
temperature it is estimated to have
gotten 1.2 to 1.4 degrees Fahrenheit
warmer in just the last century 10 out
of the last 13 years were the warmest on
record 97% of climate scientists agree
that this new tendency is not caused by
the variations of the Earth's orbit but
rather very likely caused by human
activities that means you mean and since
the Industrial Revolution we have come a
long way humans built airplanes faster
cars developed remarkable technology and
learned how the natural resources around
us can be used for our benefit although
this has led to many wonderful
inventions and advancements like the
device you're using to watch this video
or the ability to take a plane halfway
around the world
it also means we've increased our
consumption of natural resources and in
turn released a lot of greenhouse gases
into the atmosphere
now greenhouse gases occurred naturally
but in excess can be dangerous to our
planet modern human activities have
increased the release of non naturally
occurring greenhouse gases because we
have stepped up our demand for burning
fossil fuels the composition of
greenhouse gases traps heat radiated
from the Sun the more heat they trap the
warm our planet gets and as our planet
gets warmer we begin to feel the effects
what if climate changes biggest victims
our oceans oceans regularly through
earth's temperature and provide 50
percent of the Earth's oxygen a climate
change has increased the global
temperature of the oceans by more than
0.3 degrees Fahrenheit since 1969
although a warmer ocean might seem
inviting to a beach goer it actually has
devastating consequences for supporting
life at sea one of those consequences is
ocean acidification a direct effect of
increased dissolved co2 since the late
18th century ocean surface acidification
is increased by 30% a higher acid
content means calcifying species
like oysters and clams and shell water
corals are at risk putting the entire
ocean food web at risk this is bad news
for the one building people relying on
the ocean as its primary source of
protein climate changes also caused the
sea level to rise just in the last
century sea levels have risen six point
seven inches but the rate in the last
decade is nearly doubled sea levels have
risen because as the ocean gets warmer
it swells on top of that glaciers and
ice sheets are melting an article 36
cubic miles of ice between 2002 and 2005
and since 1994 each year on average the
earth has lost 400 billion tons from its
glaciers that's like an ice cube seven
and a half kilometres on a site for
miles on a side melting and flowing into
the sea when all that ice melts it fills
up our oceans and just like filling up a
bathtub the shores can't hold all that
water and coastal regions get flooded
troubling signs of climate change are
increased extreme weather events natural
disasters like floods tornadoes and
deadly heat waves are more obvious to
humans because of their immediate impact
and their sharing of the images in the
media climate change as we know it today
is change in our Earth's overall
temperature with massive and permanent
ramifications although its consequences
can be planet threatening scientists
still believe there are things we can do
on a personal level to help recycle and
reuse things walk or use public
transportation to get to work turn off
your electronics when you're not using
them eat less meat while you're at it
eat more locally grown vegetables and
foods and last but not least spread your
knowledge and concerns about climate
change with others when it comes to
climate change the main takeaway is that
it's real and although we are part of
the cause we can also be part of the
solution
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