Claim: When the Earth comes out of an ice age, the warming is not initiated by CO2 but by changes in the Earth's orbit.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Orbital forcing refers to the slow, cyclical changes in the tilt of Earth's axis and shape of its orbit.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The consensus is that several factors are important: atmospheric composition, such as the concentrations of carbon dioxide and methane (the specific levels of the previously mentioned gases are now able to be seen with the new ice core samples from EPICA Dome C in Antarctica over the past 800,000 years); changes in the earth's orbit around the Sun known as Milankovitch cycles; the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the earth's surface, which affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth–Moon system; the impact of relatively large meteorites and volcanism including eruptions of supervolcanoes.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The Milankovitch cycles are a set of cyclic variations in characteristics of the Earth's orbit around the Sun.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: In particular, during the last 800,000 years, the dominant period of glacial–interglacial oscillation has been 100,000 years, which corresponds to changes in Earth's orbital eccentricity and orbital inclination.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: He attempted to show that they originated from changes in Earth's orbit.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: [citation needed] Arctic regions notably release more heat back into space than what they absorb, effectively cooling the Earth.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Interglacials and glacials coincide with cyclic changes in the Earth's orbit.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Because most of the planet's snow and ice lies at high latitude, decreasing tilt may encourage the onset of an ice age for two reasons: There is less overall summer insolation, and also less insolation at higher latitudes, which melts less of the previous winter's snow and ice.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Orbital forcing is the effect on climate of slow changes in the tilt of the Earth's axis and shape of the orbit (see Milankovitch cycles).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: An ice age is a long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: [citation needed] The amount of heat trapping gases emitted into Earth's Oceans and atmosphere will prevent the next ice age, which otherwise would begin in around 50,000 years, and likely more glacial cycles.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: In 2009, further evidence was provided that changes in solar insolation provide the initial trigger for the earth to warm after an Ice Age, with secondary factors like increases in greenhouse gases accounting for the magnitude of the change.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Around much of Earth, deglaciation during the last 100 years has been accelerating as a result of climate change, partly brought on by anthropogenic changes to greenhouse gases.