In 2016, the bleaching was most severe in the northern third of the Reef, while after one year, the middle third has witnessed the most intense coral bleaching.
"It really was shocking to see the similar levels of severe bleaching this time in the central Great Barrier Reef that I saw previous year in the northern third of the reef", saidDr. James Kerry, part of the team at the Australian Research Council's center of excellence for coral reef studies.
The same scientists who undertook observations in 2016 recently completed an aerial survey of the reef covering more than 8,000 km (5,000 mi), examining 800 individual coral reefs.
Two severe coral bleaching events have damaged about two-thirds of the Great Barrier Reef, scientists have revealed. The latest surveys by scientists from James Cook University show that 1,500 km (932 miles) of the reef have now been bleached.
"The central third this year, I would say, was as severe in terms of bleaching as what we saw as the northern third last year", he said.
The warming waters causing the bleaching probably have to do with global warming. Last year, the scientists determined that almost two-thirds of the affected coral in the northern-most 700-km section of the Great Barrier Reef were lost during the six-month period following the peak March bleaching.
"Ultimately, we need to cut carbon emissions, and the window to do so is rapidly closing", he added. 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. "And the reason it's happening is global warming".
The concern, the researchers say, is that the coral that was damaged during the mass bleaching in 2016 has no chance of recovery.
Coral bleaching takes place due to the abnormal environmental conditions such as heightened sea temperatures.
Repeated damage could prompt UNESCO's World Heritage Committee to reconsider a 2015 decision not to put the Great Barrier Reef on its "in danger" list. Should the bleaching continue until the whole reef is dead, we stand to lose more that just a species or several even.
Coral mass bleaching happens when warmer-than-usual waters cause the coral to expel living algae, changing its color to white. "My expectation is that has happened, based on what I saw from the air and what I saw previous year".
Gardner doubled ahead of No. 2 hitter Sanchez in the fifth, and then Sanchez - just 1-for-14 on the season entering that at-bat. Given the position that Sanchez plays - catcher - it will be interesting to see how much time Sanchez will spend on the shelf.
She said she hopes the devastating incident sends the message that parents have to be aware of the dark side of social media. Goss says the accused girl was Tysen's girlfriend, who allegedly faked her own suicide on various social media sites.
Spurs made it six league victories on the spin with a dominant showing to maintain the heat on leaders Chelsea. Spurs' cause will be aided by the return of Harry Kane who has missed the last month with an ankle injury.
United States officials are hoping the Chinese leaders will convince their ally - through sanctions or diplomacy - to back off. Tillerson's statement , in full, reads: "North Korea launched yet another intermediate range ballistic missile".
More than 90 per cent of the world's executions took place in five countries - China , Iran , Saudi Arabia, Iraq and Pakistan. The US, for the first time since 2006, fell from its place in top five executors to seventh place behind Egypt.
Those of you who don't own a voice remote can also use Alexa, but only with the help of the Fire TV app for Android devices. It features a new quad-core processor that makes it 30 percent faster than the previous version, according to the company.
Scuffles also broke out in Guayaquil, where Lasso is from, before riot police before pushed back protesters with tear gas. He also appeared alongside Moreno at changing of the guard ceremony at the presidential palace.
Rice has come under fire this week amid reports that she was responsible for the unmasking of the identities of Trump associates . Certain government officials such as Rice may request names to be revealed to help them understand the intelligence reports.
After the offer became public, the USA declared war. "Conflicts such as the Balkan wars increased tensions, and it kept building". Next, on February 1, Germany resumed unrestricted submarine warfare, sinking merchant ships without warning in worldwide waters.
Trump is weighing a decision to replace loyalists and his promise to drain the swamp with the very creatures who profit there. Kushner was meeting with worldwide coalition forces in Iraq as Bannon was bumped down the NSC ladder.
UK PM Theresa May triggers Brexit process
There is no way around it", Tusk said, "The EU27 [the remaining member states] does not and will not pursue a punitive approach. He said: "Starting parallel talks on all issues at the same time as suggested by some in the United Kingdom will not happen.
Salute to Chuck Berry opens Rock Hall ceremony
Covering Prince is a hard proposition, and his take on the Purple Rain classic didn't entirely land. The band has always been heavily involved in the process when it comes to album covers.
Curry Doubtful For Durant's Likely Return To Action
However, two-time reigning MVP Stephen Curry is listed as doubtful to face the Pelicans on Saturday because of a bruised knee. 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.
Davis Cup: US wins doubles to stay alive in quarterfinal
Jordan Thompson will face John Isner , who was in excellent form despite losing to Kyrgios on Saturday over three tense sets. Thompson, Australians No. 2 singles behind No. 16 Kyrgios, was a prohibitive underdog against Sock.
Sun block takes sting out of Westbrook's record quest
The Pistons used a 12-1 spurt, capped by four points from Marjanovic, to cut the lead to 94-93 midway through the fourth quarter. Westbrook, meanwhile, finished with 23 points, 12 rebounds and eight assists plus eight turnovers in 36 minutes.
Trucking adds 4700 jobs, sets record high in March
Observers had expected at least double the jobs growth in March, which would have held steady with the trends of recent months. In a note to investors, BMO chief economist Douglas Porter described last month's numbers as a "hearty rise".
South Korea Test Fires 800 Kilometre-Range Missile
South Korea's Joint Chiefs of Staff issued a similar assessment, saying the missile flew about 60 kilometers (37 miles). South Korea and the USA confirm North Korea launched a single ballistic missile at a facility near Sinpo at 6:42 a.m.
Equaliser almost made me vomit: Klopp
At first it seemed Klopp might not fancy him but during the second half of last season it appeared he'd become the golden boy. Despite the fact that Joshua King was surrounded by red shirts, the Bournemouth midfielder still managed to get his shot off.