Precise temperature measurements only date back to around 150 years ago. Using various methods, scientists can construct a detailed picture of climates of the more distant past, known as paleoclimates.
The global average temperature is calculated using thermometer measurements. Thanks to a grid system, scientists are able to compensate for geographical irregularities.
Recent research shows that the amount of CO2 released from wildfires could be a significant contributor to global warming. But can—and should—we fight these fires?
