Niko Kommenda

A Washington Post analysis of climate data found one-fifth of the planet was 2 degrees Celsius warmer than in the late 1800s, before humans started burning fossil fuels on a large scale.

• The Human Limit

As climate change fuels disease, researchers must reinvent how to fight outbreaks. In Peru and the Amazon, AI and drones can identify dengue and malaria cases.

• Climate Coach

We took a look at how quickly Americans have adopted these technologies — and how much further they need to go.

Using heat sensors mounted on a backpack, The Post found that poorer neighborhoods in Kolkata were often 10 degrees hotter than nearby affluent communities.

• The Human Limit

A poor Kolkata neighborhood lost power during a heat wave, unlike a nearby luxury mall. The resulting protest exposed extreme heat’s unequal toll in India.

• The Human Limit

By 2050, over 5 billion people could face at least a month of extreme heat each year. See the risk level in your city.

• The Human Limit

Climate-fueled disease — tied to heat, pathogens and toxins — is an emerging, lethal threat that countries are ill-prepared to confront. The Post visited ground zero for this new era, Pakistan, to see what the future holds.

• Climate Lab

Smoke from wildfires in Canada spread record-breaking air pollution across the United States. Use our tool to check the smoke pollution where you live.

Parts of the Pacific Northwest may reach daily averages up to 30 degrees above normal that could pose health problems this early in the warm season.