How is air quality measured?
As smoky air from Canada’s wildfires shrouds broad swaths of the U.S., here are seven facts you should know about measuring air quality.
As smoky air from Canada’s wildfires shrouds broad swaths of the U.S., here are seven facts you should know about measuring air quality.
Heads up: 7 planets will be in retrograde this summer
The planet Mercury is in retrograde most often because it's the fastest planet traveling around the sun, NASA explained.
The planet Mercury is in retrograde most often because it's the fastest planet traveling around the sun, NASA explained.
Tourist films something massive swimming below plane: It was a world-famous creature
A tourist flying over the Great Barrier Reef unknowingly captured the video of a lifetime.
A tourist flying over the Great Barrier Reef unknowingly captured the video of a lifetime.
German archaeologists discover 3,000-Year-Old Sword so well preserved it 'almost still shines'
Officials say a bronze sword made more than 3,000 years ago that is so well-preserved it “almost still shines” has been unearthed in Germany.
Officials say a bronze sword made more than 3,000 years ago that is so well-preserved it “almost still shines” has been unearthed in Germany.
‘Glistening’ cluster teeming with stars captured by Hubble telescope
Globular clusters such as the one captured by the Hubble Space Telescope can contain hundreds of thousands of stars.
Globular clusters such as the one captured by the Hubble Space Telescope can contain hundreds of thousands of stars.
Christian Cooper previews his new National Geographic series 'Extraordinary Birder'
Christian Cooper, who was racially profiled in 2020 while bird watching in Central Park, talks about his new television series on National Geographic Wild called "Extraordinary Birder with Christian Cooper."
Christian Cooper, who was racially profiled in 2020 while bird watching in Central Park, talks about his new television series on National Geographic Wild called "Extraordinary Birder with Christian Cooper."
Heightened concerns for mosquito-borne viral diseases this summer
There are growing concerns over mosquito-borne viral diseases this summer.
There are growing concerns over mosquito-borne viral diseases this summer.
Watch: Dingo bites sunbathing tourist on Australian beach
Wild video shows the moment a dingo moved in on a group of beachgoers and bit a French tourist's backside.
Wild video shows the moment a dingo moved in on a group of beachgoers and bit a French tourist's backside.
Kane County wildlife center makes desperate plea to help injured fawns
Kane Area Rehabilitation and Education for Wildlife (KARE) is asking for donations to help several injured deer in their care.
Kane Area Rehabilitation and Education for Wildlife (KARE) is asking for donations to help several injured deer in their care.
Unbelievable: Massive 105-pound carp caught in Illinois River
Prepare to be amazed by a story revolving around an enormous fish.
Prepare to be amazed by a story revolving around an enormous fish.
WATCH: Bees swarm tree in downtown Chicago
The busy insects don't appear to be causing any issues with as people pass through the plaza for the weekly farmers market.
The busy insects don't appear to be causing any issues with as people pass through the plaza for the weekly farmers market.
No need to worry about the 5 asteroids passing by Earth this weekend
One is the size of a football stadium.
One is the size of a football stadium.
Bees swarm tree above Daley Plaza in downtown Chicago
A huge colony of domicile honeybees has set up shop in Daley Plaza right in the Chicago Loop.?
A huge colony of domicile honeybees has set up shop in Daley Plaza right in the Chicago Loop.?
Bees swarm tree above Daley Plaza in downtown Chicago
A swarm of bees landed in an unlikely place, and it had the Chicago Loop buzzing more than usual on Thursday.
A swarm of bees landed in an unlikely place, and it had the Chicago Loop buzzing more than usual on Thursday.
Bees swarm in tree above Daley Plaza
A swarm of bees descended on a tree in Chicago's busy Daley Plaza.
A swarm of bees descended on a tree in Chicago's busy Daley Plaza.
Florida firefighters rescue horse that fell into swimming pool, video shows
Footage, posted by the rescue team, shows officials carefully lifting the horse from the water.
Footage, posted by the rescue team, shows officials carefully lifting the horse from the water.
How deep is the Titanic? And other things to know as sub search continues
The ocean is a vast, mysterious place, with only 20% believed to be mapped and explored. Here’s a look at some significant points in the ocean.
The ocean is a vast, mysterious place, with only 20% believed to be mapped and explored. Here’s a look at some significant points in the ocean.
Push to preserve 300-year-old trees in Geneva
The trees are reportedly slated to be removed to allow for the construction of some new buildings.
The trees are reportedly slated to be removed to allow for the construction of some new buildings.
Push to preserve 300-year-old trees in Geneva
A movement is underway in Geneva to preserve a few 300-year-old oak trees.
A movement is underway in Geneva to preserve a few 300-year-old oak trees.
See the bolt of lightning on Jupiter that caused an eerie green glow
Spacecraft Juno has been orbiting Jupiter for years sending back images. NASA shares the images online. Take a look at what one person discover on an image.
Spacecraft Juno has been orbiting Jupiter for years sending back images. NASA shares the images online. Take a look at what one person discover on an image.