Claim: Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...]

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: During the LGM 22,000 YBP the average summer temperature was 3–5 °C (5–9 °F) degrees cooler than today, with variations of 2.9 °C (5.2 °F) degrees cooler on the Seward Peninsula to 7.5 °C (13.5 °F) cooler in the Yukon.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Consequently, summers are 2.3 °C (4 °F) warmer in the Northern Hemisphere than in the Southern Hemisphere under similar conditions.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: "Centennial-scale climate cooling with a sudden event around 8,200 years ago".

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: This period of warmth ended about 5,500 years ago with the descent into the Neoglacial and concomitant Neopluvial.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Research using sediment in lakes near the Okstind Glacier has shown that the summer climate in Nordland was up to 2.5 °C warmer 9,000 to 6,000 years ago, and then slowly cooled—it was 0.5 °C warmer 2,000 years before present (see Holocene climatic optimum.).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Ljungqvist 2010 "A New Reconstruction of Temperature Variability in the Extra-Tropical Northern Hemisphere During the Last Two Millennia".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: In climatology, the 8.2-kiloyear event was a sudden decrease in global temperatures that occurred approximately 8,200 years before the present, or c. 6,200 BC, and which lasted for the next two to four centuries.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Global surface temperatures have increased about 0.74 °C (plus or minus 0.18 °C) since the late-19th century, and the linear trend for the past 50 years of 0.13 °C (plus or minus 0.03 °C) per decade is nearly twice that for the past 100 years.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: When temperatures increased to 2–3°C (3.6–5.4°F) above today's level 3.5 million years ago, sea levels rose not by 59 centimeters but by .

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Over the past five decades there has been a global warming of approximately 0.65 °C (1.17 °F) at the Earth's surface (see historical temperature record).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Interstadial climate may have been relatively warm but not necessarily.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Thus current evidence does not support globally synchronous periods of anomalous cold or warmth over this interval, and the conventional terms of "Little Ice Age" and "Medieval Warm Period" appear to have limited utility in describing trends in hemispheric or global mean temperature changes in past centuries.... [Viewed] hemispherically, the "Little Ice Age" can only be considered as a modest cooling of the Northern Hemisphere during this period of less than 1°C relative to late twentieth century levels.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Estimating Changes in Global Temperature since the Preindustrial Period".