Lead

As summer brings another wave of headlines about record-breaking heat, Deutsche Welle has spoken to climatologists to explain what the terminology actually means. From Northeast Asia to Europe to the United States, extreme temperatures are contributing to thousands of deaths, fueling wildfires, and straining water, food, and energy supplies, the outlet reports.

Rather than focus on a single event, the report is structured as an explanatory guide, addressing questions such as how scientists know whether a temperature is record-breaking, why cities heat up more than rural areas, and how humidity changes the way heat affects the human body.

Coverage Comparison

Deutsche Welle's coverage takes an explanatory approach, centering on the science behind heat measurement rather than on one specific heat wave. The outlet's framing places heat records in a broader climatological context, noting that the 10 warmest years in modern global record-keeping have all occurred within the past decade. The report attributes the trend primarily to human-driven climate change, saying that burning fossil fuels is the main cause and that current warming is happening much faster than over the last million years or so.

The article also emphasizes terminology, pointing out that when media outlets use shorthand like "hottest day ever," they are referring to recorded temperatures, not the full history of Earth's climate, which has seen hotter conditions over its 4.5-billion-year existence.

Key Claims

  • Record-breaking heat waves are occurring globally, contributing to thousands of deaths, fueling wildfires, and straining water, food, and energy supplies, according to Deutsche Welle.
  • Scientists track temperatures using weather stations, ships, and ocean buoys, the outlet reports. Thousands of stations around the world monitor temperatures, and a location can set a record if its reading exceeds the previous high for a specific day, month, or season.
  • The 10 warmest years in modern global record-keeping have all occurred within the past decade, Deutsche Welle reports, citing the main datasets that began comprehensive recording in 1880.
  • Climate change is primarily caused by humans burning fossil fuels and is happening at a much faster rate than over the last million years or so, according to the outlet.
  • The urban heat island effect makes cities warmer than surrounding areas, Deutsche Welle explains.
  • High humidity makes it harder for sweat to evaporate, reducing the body's ability to cool down, and a high wet bulb temperature can be dangerous, the outlet reports.
  • At sustained wet bulb temperatures of around 35 degrees Celsius (95 degrees Fahrenheit), the body can overheat even if people are resting in the shade or staying hydrated, according to Deutsche Welle.