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Dropbox Inc., a provider of online data storage, is ending its unlimited option, saying a small handful of

The key to discovering the secrets of life at the bottom of the ocean 150 million years ago has been discovered, and it was trapped inside ancient salt formations this whole time. Experts have been able to uncover the Earth's geological history y studying tiny water particles which have been preserved in crystals for millions of years. It’s all to do with analysing the amount of lithium which is trapped in samples rock salt. As it turns out, the level of lithium can tell us far more about atmospheric conditions in the oceans over the ages than most of us previously realised. Geochemists Mebrahtu Weldeghebriel of Princeton University and Binghamton University and Tim Lowenstein of Binghamton University have published their findings in a new study. The rock salt they studied, known as marine halite, came from across the world including the US, Europe, Asia and Africa. A total of 639 samples were taken from 65 halite crystals dating back to 150 million years ago. "There is a close link between ocean chemistry and atmospheric chemistry," Weldeghebriel said. “Whatever changes happen in the ocean also reflect what's happening in the atmosphere." "The oceans and atmosphere are connected to one another, and how they change is related," Lowenstein added. "Everything is connected." Most notably, their findings have helped to create a better understanding of tectonic movement on the seafloor. The reason the presence of lithium was so important is due to what it tells us about hydrothermal activity. The amount in the water indicates the levels of chemicals and heat which was being released into the oceans by vents between tectonic plates. As tectonic plate activity declined, there was a global drop in lithium levels. Instead, it was replaced by a rise in magnesium and calcium. The reduction in activity would also have meant less carbon dioxide being released into the atmosphere, which could potentially have been a factor in the temperature drop which resulted in the ice age. Sign up for our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

VIDEO: Donald Trump has new malaria death totals.

Valorant Patch 7.04 reveals changes to 11 Agents in Valorant Episode 7 Act 2, including a major nerf to all of Jett's abilities.

The Fortnite Last Resort trailer gives fans their first look at Chapter 4 Season 4's new map, Mythic weapons, Battle Pass skins, and the vampire ruling the season.

The Arizona Cardinals have traded Isaiah Simmons to the New York Giants, moving on from the No. 8 overall pick in the 2020 draft after three seasons

St. Louis Cardinals Rumors: Could Jordan Montgomery return this offseason?

OTTAWA Canada's corporate ethics watchdog on Thursday announced investigations into the Canadian units of Walmart and Hugo Boss

By Koh Gui Qing and Tom Wilson NEW YORK/LONDON World stocks receded on Thursday as investors took a

It is the hardest week in the boxing life and times of Daniel Dubois. On Saturday night, at an outdoor venue in Poland, he will walk to the ring first and listen as nearly 40,000 cheer for Ukrainian fighting and boxing idol Oleksandr Usyk. It is a unique set of events, a world heavyweight title fight packed with emotion and pride for Usyk and the millions of Ukrainians living in Poland or close to the border. It is a homecoming made necessary away from home, a vital piece of resistance in the bloody war. Usyk will be fighting closer to his Kyiv home than he has in eight years; the 36-year-old, remember, won his cruiserweight world titles on the road in Poland, Latvia and Russia. He defended the belts against local fighters in Germany, America and England. He is a boxing treasure, unbeaten now in 20 fights, an Olympic gold medalist, a volunteer in the Ukraine defence force. He might just be changing the dictionary definition of ‘national idol’. • Get all the latest Usyk vs Dubois betting sites’ offers In late 2021, he won the three heavyweight belts that he still holds by beating Anthony Joshua at Tottenham Hotspur Stadium, fewer than 15 miles from where Joshua lives. The fight on Saturday in Wroclaw is the Usyk homecoming, make no mistake. His fans can take a bus for less than 20 quid from Kyiv to Wroclaw; it takes 18 hours, but that makes it even more of a pilgrimage to watch a national hero fight. And they will come. The beautiful gothic city on the Oder River will be overrun this weekend. The flags will be out. Dubois will finally, for the first time in his short but intense boxing life, have no pressure on his shoulders. The 25-year-old will start as the underdog for the first time in 21 fights. He turned professional in 2017 when he was just a wide-eyed teenager; his progression was deceptive, and he was made to feel invincible against many men who had no chance. In 2020, there was a bad, bad night behind closed doors and under Covid restrictions. Dubois was unbeaten in 15 fights at the time and was matched with Joe Joyce, who was also unbeaten. Dubois had stopped or knocked out 14 of his 15 victims. It was a spectacular fight with Joyce, a spectacular mistake, and Dubois – in front on two scorecards – took a knee in Round 10. His left cheekbone was damaged, his vision gone from that eye, and his resistance broken. It was harsh, a reminder that even in modern boxing there are real dangers. It was not over, and Dubois was made again – a bit smarter, a bit wiser and a better heavyweight for the loss. He changed trainers, moved from Martin Bowers to Shane McGuigan. Since the Joyce defeat, Dubois has fought and won four times, stopping his men in the second, first, fourth and third rounds. A couple of months ago, at about the time the Usyk fight was agreed, Dubois left McGuigan and joined Don Charles, an underrated and cute trainer. The fight’s simple – but misleading – narrative seems to be that Dubois has a puncher’s chance; well, all heavyweights have a puncher’s chance. Anthony Joshua went 24 rounds with Usyk, and he most definitely had a puncher’s chance. To beat Usyk, you need far more than a puncher’s chance. Thankfully, Charles understands the game. “You have to be busy, you have to make him fight, you have to make it physical, and Daniel can do that,” Charles said. The pair seem to have bonded very quickly. In 2012, Charles took Derek Chisora to Munich to fight world heavyweight champion Vitali Klitschko, who was a knockout machine. “Del Boy” lost on points, but he applied pressure, got close, whacked away, and dealt with the partisan crowd. The WBO, WBA and IBF heavyweight belts are the official prizes, and the fight went to purse bids; Dubois will clear about $2m on the night. However, the real prize is in the upset and the cash windfall that will land with the disruption caused. Don Charles can help Dubois on Saturday. And Dubois will need all the help he can get to silence the crowd and hurt Usyk. Read More Anthony Joshua has the blueprint to beat Deontay Wilder – is he brave enough to use it? Sean O’Malley becomes newest UFC superstar with one-punch KO of Aljamain Sterling Alycia Baumgardner refuses to stay ‘silent’ after failed drug test Oleksandr Usyk keeps press conference short ahead of Daniel Dubois title clash Who is fighting on Usyk vs Dubois undercard this weekend? What time does Usyk vs Dubois start this weekend?

Novak Djokovic will face Alexandre Muller of France in the first match of his return to the U.S. Open, while defending women’s champion Iga Swiatek and Coco Gauff could be headed toward a women’s quarterfinal matchup

The Women's World Cup is one of the most dramatic events in sports and these photos from Getty Images captured every striking moment.