See stunning before and after shots of coral reefs as ocean temps rose by only 2 degrees.
This is what it looks like when a piece of coral dies.

This is a phenomenon known as coral bleaching, now captured in the award-winning documentary "Chasing Coral." To get these impressive shots, a team of photographers, divers, and scientists traveled the world to capture time-lapse photographs of coral bleaching events.
"The beauty with time-lapse photography is that you have the ability to shift how we as humans see and perceive changes that may move in the slow lane," says photographer Zack Rago.
Getting these images was a challenge. Divers had to spend hours each day battling the currents. And it could be emotionally difficult too.
"Being the person on the ground experiencing those changes is certainly emotionally taxing. I have a deep connection to coral reef ecosystems. Spending as much time as I have documenting their death is something that fills me with guilt and shame to this day," explains Rago. "At the same time, I also cherish those dives because I know that our team has revealed this issue to the world in meaningful and powerful way."
When asked if there was any single dive that was especially hard, Rago says yes. "There is one dive that was particularly difficult. In the hours leading up to the dive, I actually watched the first edit of our time-lapses. Seeing the images from day one and immediately going back out to those dying reefs was the single most emotionally challenging dive I’ll likely ever do."
Coral bleaching happens when the water around a reef becomes too warm.
During a bleaching event, the coral polyps (tiny creatures that actually make the reef) are effectively cooked, slowly turning white before dying. It doesn't take much, the episodes captured in Chasing Coral were the result of only a two-degree rise in water temperature, according to The New York Times.
Once the coral is dead, brown, sludgy algae take over, turning the once vibrant reef into something that looks like a parking lot.

This deadly warming is fueled by climate change, as more than 90% of the excess heat in our atmosphere is absorbed by the ocean.
"Coral reefs are in trouble. We know that if current trends prevail, we will lose the majority of corals on the planet in the coming decades," says Rago. Scientists have warned that, given current trends, we could lose most corals within 30 years. Vast swaths of the Great Barrier Reef (where these photos were taken) may already be past the point of no return.
Rago is planning to head back to the Great Barrier Reef this November to help identify "super corals" that could help scientists breed heat-resistant reefs.
As climate change becomes the new norm, it can be difficult to remember how the world once looked.
"We need to protect what we can right now," says Rago.
There are already a lot of exciting efforts underway. Nations around the world are currently rallying around stopping or mollifying the effects of climate change, with 169 different countries joining in on the landmark Paris 2015 climate agreement.
As they work out the best way to stop this, photography like these amazing time-lapse images can be a touch point for us — something to stick in our minds. And, if we fail, they can be a record for future generations.
"This problem may be hidden in our ocean, but the solutions start with us," Rago says. By sharing these images, people can help inspire friends, family members, or business or political leaders to action.
"Chasing Coral" premiered on Netflix in July 2017 and is still available to watch as of this writing.
If you want to see more, you can watch this three-minute video, including some of the time-lapse images, below:
The team was also able to capture a weird, rare event known as coral fluorescence, which is well worth a watch. If you'd like to find out more about the film, you can visit their website.



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An Irish woman went to the doctor for a routine eye exam. She left with bright neon green eyes.
It's not easy seeing green.
Did she get superpowers?
Going to the eye doctor can be a hassle and a pain. It's not just the routine issues and inconveniences that come along when making a doctor appointment, but sometimes the various devices being used to check your eyes' health feel invasive and uncomfortable. But at least at the end of the appointment, most of us don't look like we're turning into The Incredible Hulk. That wasn't the case for one Irish woman.
Photographer Margerita B. Wargola was just going in for a routine eye exam at the hospital but ended up leaving with her eyes a shocking, bright neon green.
At the doctor's office, the nurse practitioner was prepping Wargola for a test with a machine that Wargola had experienced before. Before the test started, Wargola presumed the nurse had dropped some saline into her eyes, as they were feeling dry. After she blinked, everything went yellow.
Wargola and the nurse initially panicked. Neither knew what was going on as Wargola suddenly had yellow vision and radioactive-looking green eyes. After the initial shock, both realized the issue: the nurse forgot to ask Wargola to remove her contact lenses before putting contrast drops in her eyes for the exam. Wargola and the nurse quickly removed the lenses from her eyes and washed them thoroughly with saline. Fortunately, Wargola's eyes were unharmed. Unfortunately, her contacts were permanently stained and she didn't bring a spare pair.
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Since she has poor vision, Wargola was forced to drive herself home after the eye exam wearing the neon-green contact lenses that make her look like a member of the Green Lantern Corps. She couldn't help but laugh at her predicament and recorded a video explaining it all on social media. Since then, her video has sparked a couple Reddit threads and collected a bunch of comments on Instagram:
“But the REAL question is: do you now have X-Ray vision?”
“You can just say you're a superhero.”
“I would make a few stops on the way home just to freak some people out!”
“I would have lived it up! Grab a coffee, do grocery shopping, walk around a shopping center.”
“This one would pair well with that girl who ate something with turmeric with her invisalign on and walked around Paris smiling at people with seemingly BRIGHT YELLOW TEETH.”
“I would save those for fancy special occasions! WOW!”
“Every time I'd stop I'd turn slowly and stare at the person in the car next to me.”
“Keep them. Tell people what to do. They’ll do your bidding.”
In a follow-up Instagram video, Wargola showed her followers that she was safe at home with normal eyes, showing that the damaged contact lenses were so stained that they turned the saline solution in her contacts case into a bright Gatorade yellow. She wasn't mad at the nurse and, in fact, plans on keeping the lenses to wear on St. Patrick's Day or some other special occasion.
While no harm was done and a good laugh was had, it's still best for doctors, nurses, and patients alike to double-check and ask or tell if contact lenses are being worn before each eye test. If not, there might be more than ultra-green eyes to worry about.