A natural limestone monolith located at the village of Katskhi in the western Georgian region of Imereti.

See the breathtaking 2018 National Geographic Photo Contest winners.

What creates the colors in Jupiter's clouds? No one is sure. The thick atmosphere of Jupiter is mostly hydrogen and helium, elements which are colorless at the low temperatures of the Jovian cloud tops. Which trace elements provide the colors remains a topic of research, although small amounts of ammonium hydrosulfide are one leading candidate. What is clear from the featured color-enhanced image -- and many similar images -- is that lighter clouds are typically higher up than darker ones. Pictured, light clouds swirl around reddish regions toward the lower right, while they appear to cover over some darker domains on the upper right.

Building anything or getting anywhere isn’t always going to be easy. Keep moving. Stay positive.

As the cleanup operation continues across across the French capital after violent demonstrations against rising taxes and the high cost of living, the messages left behind reveal some of the motives and emotions behind the unrest

What can you see in the night sky this season? The featured graphic gives a few highlights for Earth's northern hemisphere. Viewed as a clock face centered at the bottom, early (northern) winter sky events fan out toward the left, while late winter events are projected toward the right. Objects relatively close to Earth are illustrated, in general, as nearer to the cartoon figure with the telescope at the bottom center -- although almost everything pictured can be seen without a telescope. As happens during any season, constellations appear the same year to year, and, as usual, the Geminids meteor shower will peak in mid-December.

A near-perfect cast of a right bronchial tree coughed up by a patient experiencing internal bleeding related to anticoagulants administered during treatment of heart failure.

Geologist-Astronaut Harrison Schmitt, Apollo 17 Lunar Module pilot, is photographed next to the American Flag during extravehicular activity (EVA) of NASA's final lunar landing mission in the Apollo series. The photo was taken at the Taurus-Littrow landing site. The highest part of the flag appears to point toward our planet earth in the distant background.

There are plenty of great wildlife photographers who take awe-inspiring and interesting shots. But when these animals do funny things and take silly poses: it adds a whole new level to wildlife photography. The Comedy Wildlife Photography Awards is centered on the photos of animals that are sure to improve your day.

This is in the Finger Lakes region of upstate New York, taken a little over a week ago. I highly recommend visiting this place in the fall as it is one of my favorite places in the US northeast. FYI - I am not actually off trail here, my camera is resting on a railing. Photo by Matthew Macpherson.

I arrived early in the morning to the walkway by Smuggler's Notch to find the whole area engulfed by a void of fog. I was exploring around and shooting some reflections of the trees in a nearby pond when I suddenly noticed the fog was slowly receding, revealing the amazingly colorful foliage on the hills. It was a pretty magical start to my week-long photography stay-cation in Vermont.

Flickr's new 1,000-photo limit for free accounts will include Creative Commons images, but those uploaded before November 1 won't be deleted.

For nearly 50 years, Bon Bon Bums have been produced in the Colombina factory in La Paila, north of Cali. At the start, 20 workers were responsible for the production of four million lollipops per month. Today, in that same factory, 200 workers produce more than 40 times as many.

Acrylics on canvas - 80 * 60 cm

This is a gibbous Moon. More Earthlings are familiar with a full moon, when the entire face of Luna is lit by the Sun, and a crescent moon, when only a sliver of the Moon's face is lit. When more than half of the Moon is illuminated, though, but still short of full illumination, the phase is called gibbous. Rarely seen in television and movies, gibbous moons are quite common in the actual night sky.

Knowledge and skills development is vital to the health of organizations. Here are some reasons why companies benefits program should include educational opportunities.

Hennessey Performance is proud to be chosen by Ford to own a 2018 Ford GT Heritage Edition. Here are some photos and video of the delivery in Sealy, Texas, received by John Hennessey and team.

by Paranyu Pithayarungsarit

Both are 75 by 115 cm, done in acrylics and spraypaint and both are for sale. The one with the joint is a selfportrait, the other one is from my best friend, two hours after he got his new teeth.

Scotland has the highest percentage of people with red hair in the world. Photographer Kieran Dodds, in his body of work Gingers, asked some of them what it meant to be a redhead

NASA’s Mars Reconnaissance Orbiter (MRO) has captured an incredible snapshot of the Matara Crater on Mars. The image, taken by the High Resolution Imaging Science Experiment (HiRISE) camera aboard the MRO, unveils spectacular gully formations on sand dunes inside the Martian crater.

Park Güell is the reflection of Gaudí's artistic plenitude, which belongs to his naturalist phase.

On March 13, 2006 Cassini's narrow-angle camera captured this look at Saturn and its rings, seen here nearly edge on. The frame also features Mimas and tiny Janus (above the rings), and Tethys (below the rings). "Above" and "below" the rings is mostly a matter of perspective here. All three moons and the rings orbit Saturn in roughly the same plane.

Capturing a perfect shot is all about being at the right moment, with any type of camera, a perfect street photography doesn’t necessarily require a high-definition camera. Sometimes the photographer is unware about the subjects as you can see in these coincidentally captured street photography shots by some genius minds.

An absolute epic night of astro and Aurora.