An aerial surveys carried out by a group of scientists showed that bleaching has affected about 1,500km (900 miles) stretch of the reef.
In 2016, bleaching was most severe in the northern third of the Reef, while one year on, the middle third has experienced the most intense coral bleaching including off Townsville and south towards Mackay.
Just last month, the Australian government's Great Barrier Reef Marine Park Authority reported noticing a second straight year of mass coral bleaching, after it conducted its own aerial survey.
Kerry also explained that the bleached corals normally take about a decade to completely recover, but he later pointed out that "mass bleaching events 12 months apart offer zero prospect of recovery for reefs that were damaged in 2016".
A groundbreaking study published past year found that climate change is the primary cause of coral reef degradation around the world.
When researchers flew over the reef for an aerial survey, they were shocked.
The 2017 survey of the reef covered more than 8,000km (5,000 miles) and almost 800 coral reefs that matched the 2016 aerial surveys.
Researchers have found two consecutive mass coral bleaching events in the reef, part of which can be attributable to climate change.
Hughes said that the reef was struggling with multiple impacts. Scientists have concluded that the only hope of preserving the reef is to reverse the global warming that is raising ocean water temperatures.
"We need to protect the Great Barrier Reef, because it is one of the great tourism destinations of Queensland", he said. It's only the third recorded instance of global coral bleaching, with the other two coming in 1998 and 2010, but it's easily the longest running. Securing a future for coral reefs "ultimately requires urgent and rapid action to reduce global warming".
Bleaching is caused by abnormal environmental conditions, such as heightened sea temperatures, which causes coral to drive out the algae known as zooxanthallae that gives them colour, leaving the coral bleached and looking white.
Despite the massive devastation of the world heritage site, UNESCO's World Heritage Committee in 2015 decided NOT to put the Great Barrier Reef on its "in danger" list. An estimated 93 percent of all increases in the Earth's heat are absorbed by oceans, and when that happens, it causes corals to become stressed, resulting in the loss of photosynthetic algae. The reefs which were damaged two years in a row, the problem reached to be extremely severe because they are dying off. But if temperatures remain high, eventually the coral will die, removing the natural habitat for many species of marine life.
"Last year was bad enough, this year is a disaster year", he told the newspaper.
Many who attended the protest at the Union Buildings flew the South African flag high and held up placards against Zuma . The Guptas deny any wrongdoing, and Mr Zuma has said there was nothing improper in the way he chose ministers.
Depression can also lead to suicide, which is the second highest cause of death among 15-29 year olds in the region, noted WHO. However, such training may not be for everyone who has depression , depending on the severity of the condition.
She said "The allegation is that somehow Obama administration officials utilized intelligence for political purposes". This official and two other intelligence officials said the NSA often receives dozens of such requests in a month.
The two teams have met seven times in the Premier League, with undefeated Spurs on a four-game winning streak (W5, D2). Tottenham would, at least temporarily, cut Chelsea's lead to four points with a win.
The North has defied the ban, saying it infringes on its sovereign rights to self-defence and the pursuit of space exploration. President Donald Trump and Chinese President Xi Jinping. "That decision would be up to the president", he told reporters.
The Belgian playmaker was named PFA Player of the Year after helping to inspire Premier League glory in 2014-15. I'm very happy to face this type of situation, to play with only four points above our opponent.
The launches are considered to be in violation with the corresponding resolution adopted by the United Nations. Mr Chang said Chinese leader Xi Jinping would have considered the strike as a "sign of disrespect to him".
Experts say there is no way Romney will run for the seat without Hatch's blessing. 'I've had some conversations w mitt Romney . And as the first LDS presidential nominee, he unsurprisingly carried Utah with 73 percent of the vote.
But creatively, YouTube has done a stellar job of showcasing TV in a new way, for the mobile generation. The app was launched in a limited beta covering some 60,000 users in February, a Google spokesman said.
A Go Fund Me fundraising page has been set up to pay for the family's medical bills has already raised almost £25,000. Since the incident, Tysen has been on life support at a Children's Hospital at the University of MI in Ann Arbor .
Ora is said to have delivered her youngster smoothly following a four-hour labour bringing an end to her 15-month pregnancy. Once sign labor is close is when a giraffe's water breaks, which can be a trickle of liquid or a heavier flow of mucus.
That helped the Gamecocks stick with Gonzaga after the Bulldogs began the game shooting 60 percent at the first media timeout. He missed his second free throw on objective but Gonzaga's Zach Collins rebounded and made two free throws to clinch it.
High-performance engines often have higher compression ratios and thus need fuel with higher octane ratings to avoid knocking. The hashtag #DodgeDemon is the next part that will be seen in the Dodge performance story.
Closing arguments over two days capped a three-week trial and enabled jurors to begin deliberations in late afternoon. In an agreement with the Security and Exchange Commission, Mickelson agreed to repay the trading profits.
Share with Us - We'd love to hear eyewitness accounts, the history behind an article, and smart, constructive criticism. He added that the value of the Arctic's mineral riches was estimated to be US$30 trillion (S$41.8 trillion).
Clad in a white shirt and grey suit, Lee, himself the vice-chairman of Samsung Electronics , was mostly expressionless. The suspension of the Galaxy Note 7 phablet a year ago dealt a blow to its market presence as well as its reputation.
Young released "Rockin' in the Free World", a critique of the first George Bush administration, on the Freedom album in 1989. Besides the induction ceremony Friday night at Barclays Center, Lenny Kravitz will pay tribute to Prince.
Jordan Thompson will face John Isner, who was in excellent form despite losing to Kyrgios on Saturday over three tense sets. The 22-year-old won both of his matches against the Czech Republic in February's first-round tie in Melbourne.
She said she is struggling to get enough to eat amid food shortages. "The only coup here is against President Nicolas Maduro". One person was killed after a third day of protests turned violent in Venezuela on Thursday.
At 65-14, the team is now 4.5 games clear of the San Antonio Spurs, who are going to play as the No. 2 seed in the playoffs. This gives Golden State a nice excuse to rest Curry, possibly for multiple games, going into the playoffs.
After almost every game, triple-double or not, Westbrook deals with reporters asking him whether he's chasing stats or not. Westbrook made just six-of-25 shots from the field, his worst shooting night of the season.
Aside from Kushner being Secretary of Everything , Ivanka ally and adviser Dina Powell is now deputy national security adviser. Trump was not pleased by the "President Bannon" puppet-master theme promoted by magazines, late-night talk shows and Twitter.
With Chelsea, Arsenal, Manchester City and Liverpool still to play, there seems no way back for the Teesside club. Last night may have brought the attacking football the Boro fans had craved for so long, but it was to no avail.