When the temperatures spiked last year, numerous weather agencies said it was the hottest month, summer and year on record. But those records only go back to 1850 at best because it's based on thermometers. Now scientists can go back to the modern western calendar's year 1, when the Bible says Jesus of Nazareth walked the Earth, but have found no hotter northern summer than last year's.

Approximately 1.9 billion people worldwide depend on glaciers and snow packs for their drinking water supply. During the warmer months, glaciers undergo a natural melting process, releasing significant amounts of water into rivers, which in turn sustains human populations, industries, and ecosystems. However, for this cycle to continue, glaciers must replenish at a comparable rate during the winter months when snowfall occurs.

The United Nations voiced concern on Wednesday after dozens of cases of cholera were reported in flood-stricken Kenya. I believe that between government and national and international partners, we'll be able to contain it, the UN's resident coordinator in Kenya, Stephen Jackson, said in an interview with Citizen TV. We've contained cholera before, but it's a significant concern, he added.

Locals in the area near the eastern Serbian city of Smederevo have been facing significant air pollution and thick red dust since the Chinese company HBIS acquired a steel mill eight years ago. Radinac has become known as ed village', because everything is permanently coated in a layer of red dust. Residents report a significant increase in cancer cases and highlight the presence of high levels of arsenic, chromium, and lead in the dust.

In a cave in Mexico's Riviera Maya, where nature has sculpted a subterranean landscape of stunning beauty, thick steel columns supporting a controversial new tourist railway intrude into a delicate ecosystem. - Clean-up promised - Despite Lopez Obrador's assurances, concrete has leaked out of the steel columns and contaminated the cenote water, according to environmentalists.