One of the most essential tests of science is reproducibility. For this chart, I separated our weather station archive into 20 independent 5% samples and computed the global land average of each. The samples vary a bit, but each one paints a similar picture of warming.

The argument that urban heat islands are biasing temperature records continually comes up. There is a long history of papers showing it's effect minimal globally (and the world is 70% oceans with no urbanization). My colleague Dr. Robert Rohde has a neat updated analysis for global land:

Berkeley Earth's next monthly climate briefing, looking back on June temperatures, will be held online on July 10th at 8 AM PT / 11 AM ET / 5 PM CET. us02web.zoom.us/webinar/regist… It's open for anyone, but geared toward the news media. See you there.