The evidence that the Earth is warming and carbon dioxide is increasing at rates not seen in millenia is overwhelming. Arguments that such evidence is manufactured are rationally unsound and unsupported by any evidence.
climate.nasa.gov
Global temperatures are rising
The ocean is getting warmer
The ice sheets are shrinking
Glaciers are retreating
Snow cover is decreasing
Sea level is rising
Arctic sea ice is declining
Extreme events are increasing in frequency
Ocean acidification is increasing
"Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly 10 times faster than the average rate of warming after an ice age. Carbon dioxide from human activities is increasing about 250 times faster than it did from natural sources after the last Ice Age." [Emphasis mine]
IPCC Sixth Assessment Report, WG1, Chapter 2
Vostok ice core data; NOAA Mauna Loa CO2 record
Gaffney, O.; Steffen, W. (2017). "The Anthropocene Equation," The Anthropocene Review (Volume 4, Issue 1, April 2017), 53-61.

Climate Change Evidence: How Do We Know?
The rate of change since the mid-20th century is unprecedented over millennia.
Global temperatures are rising
The ocean is getting warmer
The ice sheets are shrinking
Glaciers are retreating
Snow cover is decreasing
Sea level is rising
Arctic sea ice is declining
Extreme events are increasing in frequency
Ocean acidification is increasing
"Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly 10 times faster than the average rate of warming after an ice age. Carbon dioxide from human activities is increasing about 250 times faster than it did from natural sources after the last Ice Age." [Emphasis mine]
IPCC Sixth Assessment Report, WG1, Chapter 2
Vostok ice core data; NOAA Mauna Loa CO2 record
Gaffney, O.; Steffen, W. (2017). "The Anthropocene Equation," The Anthropocene Review (Volume 4, Issue 1, April 2017), 53-61.