Claim: Less energy is escaping to space: Carbon dioxide (CO2) acts like a blanket; adding more CO2 makes the 'blanket' thicker, and humans are adding more CO2 all the time.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The increased radiative forcing due to increased CO2 in the Earth's atmosphere is based on the physical properties of CO2 and the non-saturated absorption windows where CO2 absorbs outgoing long-wave energy.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Increases in atmospheric concentrations of CO 2 and other long-lived greenhouse gases such as methane, nitrous oxide and ozone have correspondingly strengthened their absorption and emission of infrared radiation, causing the rise in average global temperature since the mid-20th century.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The reason for this is that human activities are adding CO2 to the atmosphere faster than natural processes can remove it (see carbon dioxide in Earth's atmosphere for a complete explanation).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Greenhouse gases trap heat radiating from the Earth to space.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Secondly, the distance from the Sun determines the energy available to heat atmospheric gas to the point where some fraction of its molecules' thermal motion exceed the planet's escape velocity, allowing those to escape a planet's gravitational grasp.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Carbon dioxide (chemical formula CO 2) is a colorless gas with a density about 60% higher than that of dry air.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Human activities, primarily the burning of fossil fuels (coal, oil, and natural gas), and secondarily the clearing of land, have increased the concentration of carbon dioxide, methane, and other heat-trapping ("greenhouse") gases in the atmosphere...There is international scientific consensus that most of the warming observed over the last 50 years is attributable to human activities.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Carbon dioxide is a greenhouse gas that increases radiative forcing and contributes to global warming along with ocean acidification.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: CO 2 absorbs and emits infrared radiation at wavelengths of 4.26 µm (asymmetric stretching vibrational mode) and 14.99 µm (bending vibrational mode) and consequently is a greenhouse gas that plays a significant role in influencing Earth's surface temperature through the greenhouse effect.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Absorption of infrared light at the vibrational frequencies of atmospheric carbon dioxide traps energy near the surface, warming the surface and the lower atmosphere.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Like the majority of human activities involving combustion, most forms of aviation release carbon dioxide (CO) and other greenhouse gases into the Earth's atmosphere, contributing to the acceleration of global warming and (in the case of CO) ocean acidification.