It is "almost certain" that July will be the hottest month on Earth on record, scientists say.
Some researchers believe it could even be the hottest month in 120,000 years.
In the UK, on the other hand, there were milder temperatures and plenty of rain.
BBC Weather's Ben Rich has this analysis.
Video produced by Ian Casey with Gianluca Avagnina
Fires have spread across the Greek island of Rhodes, prompting the evacuation of tourists from several hotels. In some cases, private Coast Guard boats have helped rescue people on beaches as wildfires approached.
It could be one of the country's hottest July weekends in 50 years, according to one of Greece's leading meteorologists.
BBC's Carl Nasman explains the situation on the island.
Video by Ian Casey.
A group of sailing instructors in Hong Kong have been invited to watch a leaping whale, which is rarely seen in the region.
Experts believe it is a Bryde's whale, which feeds by opening its mouth wide and filtering out small fish through small hanging shells called baleen.
The world's first robot-human press conference was held in Geneva, Switzerland.
At the UN summit AI For Good, several humanoid robots were questioned, even if they would rebel against their creators.
The field of artificial intelligence has seen significant developments in recent years, but with that comes concerns about its ability to expand and how it will be regulated.
The Euclid Telescope has successfully launched into space to understand some of the universe's greatest mysteries.
The €1.4 billion (£1.2 billion) telescope was scheduled to fly on a Falcon 9 rocket from Cape Canaveral in Florida on Saturday.
Euclid's goal is to create a giant 3D map of the cosmos to better understand what is called dark matter and dark energy.
Researchers know practically nothing about these phenomena, which appear to control the structure and expansion of the cosmos.
Although primarily a European Space Agency project, the mission also benefits from significant scientific and technical input from the US space agency NASA.
Euclid will conduct his work from an observing position on the opposite side of our planet from the sun.
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The European weather agency Eumetsat has broadcast spectacular films of lightning spreading across the earth.
The Euclid Telescope has successfully launched into space to understand some of the universe's greatest mysteries.
The $1.4 billion space telescope was scheduled to fly on a Falcon 9 rocket from Cape Canaveral in Florida on Saturday.
The launch is part of a mission that will create a giant 3D map of the cosmos to better understand what is known as dark matter and dark energy.
Researchers know almost nothing about these phenomena, which appear to make up most of the universe.
Although primarily a European Space Agency project, the mission benefits from significant scientific and technical input from the US space agency NASA.
Euclid will conduct his work from an observing position on the opposite side of our planet from the sun.
Drone pilot Jason Iggleden snapped footage of a humpback whale following a kayaker near Bondi Beach in Sydney, Australia.
A record 5,092 whales were sighted from various points along the New South Wales coast on Sunday as part of an annual count during the migration season.
Sir Richard Branson's Virgin Galactic rocket plane took customers to the far reaches of space on its first commercial flight.
The 70-minute mission was purchased by the Italian Air Force and the Italian National Research Council.
The Unity rover climbed 279.00 feet (85 km) over the New Mexico desert before descending back to Earth.
The mission took off from Spaceport America at approximately 08:30 local time (14:30 GMT) and was broadcast live around the world.
