SAN DIEGO--(BUSINESS WIRE)--Aug 1, 2023--

Robert F. Kennedy Jr. is expected to announce Monday that he is dropping out of the Democratic presidential primary and will run as an independent. The move would come after Kennedy's calls for a debate with President Joe Biden went nowhere and with Biden continuing to hold a 50-point advantage in primary polling.

Future space missions might use all-female crews because they are more “efficient”, a new study has suggested. Many space agencies around the world are already preparing for the first human trips to Mars and perhaps other planets. But those trips will be incredibly resource-intensive, with the food and other material required to support a crew over years being an important consideration. One way to minimise that demand on resources would be to send all-female crews, a new study conducted by the European Space Agency suggests. It found that female astronauts would be likely to need less water to stay hydrated, expend less energy, need less oxygen and carbon dioxide and produce less heat than their male counterparts. That in turn would require less space to store the equipment needed to allow those astronauts to live, and therefore make the journey theoretically easier for engineers. The exact difference between a male and female crew would depend on the stature and other details of the astronauts that were chosen. But in all situations, the all-female crew were found to use less energy. That was because they are lighter than their male counterparts, and tend to use less oxygen when they are exercising. The difference remained true even when the astronauts were modelled as if they were engaging in the kind of exercise that astronauts have done on the International Space Station, which is required to ensure they stay fit and healthy without the usual gravity on Earth. The fact that women also tend to be smaller would be another advantage the scientists note, since it would mean that engineers would be able to build them smaller space habitat modules. “There may be a number of operational advantages to all-female crews during future human space exploration missions,” the team conclude in a new paper. The work was theoretical and used already published data on female astronauts and physiological research. The research is published in a new paper, ‘Effects of body size and countermeasure exercise on estimates of life support resources during all-female crewed exploration missions’, in Scientific Reports. Read More Why is Elon Musk purging Twitter accounts? Apple finally launches two professional apps on the iPad AI robots figure out how to play football in shambolic footage

Ukraine’s military has “good news” in the eastern front of the battlefield where heavy fighting is underway to regain ground, deputy defence minister Hanna Maliar has said, saying Kyiv’s forces were making gains near Bakhmut. “We are moving forward in the Bakhmut direction. The main battles continue in the districts of Andriivka, Kurdyumivka, Klishchiivka. And we have good news there – Andriivka. The situation is very complex and changeable, we keep our fingers crossed,” the deputy defence minister said in her official Telegram channel on Thursday evening. Initially, the minister claimed Ukrainian forces had retaken Andriivka village, which falls south of Bakhmut, but the country’s Third Assault Brigade fighting in the region said the report was “premature”. “Currently, serious and heavy fighting continues in the districts of Klishchiivka and Andriivka,” the brigade from Ukraine’s ground forces handling military operations on the eastern front said. Ms Maliar also said Vladimir Putin’s troops had sustained “significant losses” in attacks on key towns as Ukrainian forces are bolstering their efforts to capture clusters of villages in a drive towards the Sea of Azov. The Russian casualties had “significantly reduced their ability to defend themselves”, she said. Senior military officials said heavy casualties have been inflicted on Russian forces on the southern front, with over 600 deaths of Russian soldiers. “The enemy, as a result of attempts to recapture at least some of the lost positions in the Tavria (south) direction in the last two days has lost 15 tanks and 12 armoured vehicles,” Oleksander Shtupun, spokesperson for troops on the southern front, said on national television. Russian personnel losses stand at 665 over two days, he said. As part of a critical component of Ukraine’s four-month-old counteroffensive, the country’s forces are pushing southward with the aim to split a land bridge created by Russian forces between the Crimean peninsula and the areas Ukraine holds in the east. Russia’s defence ministry claimed its forces repelled eight attacks in the east in the hotly contested areas south of Bakhmut. Ukraine’s military confirmed attacks on two Russian patrol ships early on Thursday and said it destroyed a sophisticated air defence system in the west of occupied Crimea. President Volodymyr Zelensky marked a direct and rare celebration of the attacks on the Russian navy in his nightly address. “The entire staff of the Security Service of Ukraine and our Navy should be specially commended for this. I thank you for today’s triumph – the destruction of the occupiers’ air defence system on the land of our Crimea. It is a very significant achievement, well done! Glory to all who fight for Ukraine! And thank you to everyone who helps!” he said in his nightly address. The war-hit nation has been pushing back in the southern region and making increasing missile hits on the Crimean peninsula this week to challenge Mr Putin’s control in the Black Sea region. On Wednesday, Kyiv said it seriously damaged a Russian submarine and landing ship undergoing repairs in a missile strike on a shipyard in the Crimean port of Sevastopol, home to the Russian Black Sea Fleet. Read More Zelenskyy is expected to visit Capitol Hill as Congress is debating $21 billion in aid for Ukraine Ukraine-Russia war – live: Kyiv is pushing Putin forces back, UK’s most senior military officer says With Russia isolated on the world stage, Putin turns to old friend North Korea for help Kim Jong-un tests out Putin’s limousine during historic meeting Why support for Ukraine is in danger of splitting the EU

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A mountaineering official and a climber say a Japanese climber has died and a fellow mountaineer was injured when an apparent rock fragment hit them while trying to scale one of the highest peaks in northern Pakistan

Leeds boss Sam Allardyce hopes the fear-factor can help kick-start his side’s Premier League survival bid on Saturday against Newcastle. Allardyce answered Leeds’ SOS last week after they sacked Javi Gracia with four games remaining and has three left to save them from relegation after the 2-1 defeat at Manchester City. Leeds ended their 16-year Premier League exile under Marcelo Bielsa three seasons ago, but slipped back into the bottom three on Monday and are two points from safety. Allardyce said: “The fear needs to drive them on, the fear of relegation, the fear of losing their Premier League status should make them hopefully fight and fight hard for their status, their position at Leeds United.” Leeds conceded 23 goals in April, a Premier League record for a calendar month, and former England boss Allardyce feels they must score first against Champions League hopefuls Newcastle. “That’s very important for us on Saturday,” the 68-year-old said. “Getting the first goal would be a big lift. “It would help us win the game. I’m not saying we would win the game, but going a goal down would be a very difficult job I think mentally for the players to come back from. “If that’s the case then they’ll have to try and do it. What they won’t have to do is go daft like they have done before, leave the back door open and concede two, three and four again.” Allardyce is relishing his first game in charge of the club at Elland Road and revealed a meeting with Leeds great Eddie Gray this week invoked memories of Don Revie’s side of the 1960s and 70s. “I loved playing here as the away team,” Allardyce said. “I love the atmosphere. I came as a manager and it was the same. “The historical nature of the game and yes, it might be an old stadium, but it’s Elland Road and what it stands for.” Allardyce joked he almost asked former winger Gray, who had two spells as Leeds manager and is now club ambassador, if he wanted to play. “The old days when I was growing up watching that (Revie) team, I was speaking to Eddie today at great length,” Allardyce added. “He’s looking really fit, I was wondering if he could put his boots on and play. He’s the fittest 75-year-old I’ve seen in a long time. He’s still around the club, he still comes in he loves it that much. It’s a great football club.” Allardyce, who has focused on shoring up Leeds’ leaky defence in his short time at the club, bemoaned the criticism he has received throughout his career for extoling the need for keeping clean sheets. He added: “If you don’t listen to me, listen to Eddie Gray. If you don’t listen to him either listen to Pep (Guardiola) or Alex Ferguson. They all win the league with the best clean sheet record.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Notts County boss Luke Williams looking to end emotional season with Wembley win ‘Struggling’ Tommy Spurr steeled for charity fundraiser in aid of his son Football rumours: Tottenham ready for fight to keep hold of Harry Kane

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A train strike across Italy has stranded workers and tourists alike on a sweltering weekday at the peak of high tourism season

More MLB rumors as the Braves trade Kyle Wright to the Royals in a shocker, the Red Sox get bad injury news, and the Dodgers hatch a bold free agency plan.