There is unequivocal evidence that Earth is warming at an unprecedented
rate. Human activity is the principal cause.
Earth-orbiting satellites and new technologies have helped scientists see
the big picture, collecting many different types of information about our
planet and its climate all over the world. These data, collected over many
years, reveal the signs and patterns of a changing climate.
Takeaways
- While Earth’s
climate has changed throughout its history, the current warming is happening at a rate
not seen in the past 10,000 years.
- According to the
Intergovernmental Panel on Climate Change (IPCC), "Since systematic scientific
assessments began in the 1970s, the influence of human activity on the
warming of the climate system has evolved from theory to established
fact."1
- Scientific information
taken from natural sources (such as ice cores, rocks, and tree rings) and
from modern equipment (like satellites and instruments) all show the signs
of a changing climate.
- From global temperature rise to melting ice sheets, the evidence of a warming planet abounds.
Source: Climate Change - NASA Science
No comments:
Post a Comment