More evidence that it's warmer now than it was during the Little Ice Age

Scientists use Thoreau’s journal notes to track climate change | The Raw Story

Researchers use Walden author’s tables of flowering dates in 1840s Massachusetts to show temperature has risen 2.4C
Fittingly for a man seen as the first environmentalist, Henry David Thoreau, who described his isolated life in 1840s Massachusetts in the classic of American literature Walden, is now helping scientists pin down the impacts of climate change..."Thoreau was also an activist, and perhaps he would also be involved in the movement to reduce the greenhouse gases that are linked to climate change.”

Little Ice Age - Wikipedia, the free encyclopedia

NASA defines the term as a cold period between 1550 AD and 1850 AD and notes three particularly cold intervals: one beginning about 1650, another about 1770, and the last in 1850, each separated by intervals of slight warming