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All just got a little hotter round here! The first phase of test results for our precooler heat exchanger replicate supersonic flight conditions at Mach 3.3. Further #HotHTX tests to #hypersonic coming soon @SpaceportCO #futureflight #thermalmanagement https://t.co/4fMgeTgEvD pic.twitter.com/JWUOhpsuLr— Reaction Engines Ltd (@ReactionEngines) April 8, 2019 372

Activists with the environmental organization Greenpeace are currently hanging from a bridge from Houston in an attempt to block a shipping channel known for transporting oil.According to KHOU-TV, a portion of the Houston Ship Channel was blocked on Thursday as activists hung from the Fred Hartman Bridge. KHOU reports that 11 people were hanging from the bridge.Greenpeace took credit for the incident in a series of tweets, using the hashtag #PeopleVsOil.Greenpeace says it plans to continue the protest for 24 hours.Car traffic on the bridge is slow but moving.Greenpeace's demonstration comes on the same day as a Democrat debate that will take place in Houston this evening. 692

A study from the National Institutes of Health claimed that permanent hair dye and chemical hair straighteners could increase the risk of breast cancer among women. The study published online on Dec. 4 in the International Journal of Cancer found that women who used permanent hair dye and chemical hair straighteners were 9% more likely to develop breast cancer than those who did not. The NIH used a sample size of 46,709 women. Researchers stressed that there was little to no increase in breast cancer risk for semi-permanent or temporary dye use."Researchers have been studying the possible link between hair dye and cancer for a long time, but results have been inconsistent," said corresponding author Alexandra White, Ph.D., head of the NIEHS Environment and Cancer Epidemiology Group. "In our study, we see a higher breast cancer risk associated with hair dye use, and the effect is stronger in African American women, particularly those who are frequent users. "While the study suggests an increased risk for women, these results need to be replicated in other studies to make a conclusion, the NIH said. When asked if women should stop dyeing or straightening their hair, co-author Dale Sandler, Ph.D., chief of the NIEHS Epidemiology Branch, said, "We are exposed to many things that could potentially contribute to breast cancer, and it is unlikely that any single factor explains a woman’s risk. While it is too early to make a firm recommendation, avoiding these chemicals might be one more thing women can do to reduce their risk of breast cancer." 1576

After eliminating free samples at its locations in March due to the spread of the coronavirus, Costco said on its quarterly earnings call this week that it plans on resuming samples in mid-June. Costco has made significant changes within stores in recent months due to the virus. Costco resumed May 4 after reducing hours, but is now requiring customers and employees to wear masks. Costco has also placed limits on some fresh meats. “We're going to start doing some things in mid-June on a slow rollout basis in sampling,” Costco CFO Richard Galanti said. “I can't tell you anymore, but needless to say it’s not going to be where you go and just pick up an open sample with your fingers. Sampling both food and non-food items are popular.”Galanti said resuming sampling is important in making customers excite to return to Costco stores. Sam’s Club also made a similar decision in March to eliminate samples in stores. 932

A White House staff member has told House investigators that senior officials have overruled concerns raised about 25 individuals whose security clearances were initially denied over a range of disqualifying issues -- such as fears about foreign influence and potential conflicts-of-interests -- warning of the grave implications to national security, according to a senior Democratic lawmaker.Now House Oversight Chairman Elijah Cummings plans to issue a subpoena this week demanding an interview with Carl Kline, who served as the personnel security director at the White House during President Donald Trump's first two years in office -- as part of the Democrats' investigation into the handling of the security clearance process, including for Trump's son-in-law, Jared Kushner, and the President's daughter, Ivanka Trump, who are both also White House advisers.Cummings released a memo Monday detailing an interview with Tricia Newbold, a White House employee who has worked for 18 years in Republican and Democratic administrations and currently serves as the Adjudications Manager in the Personnel Security Office. According to the memo, Newbold, whom Cummings described as a whistleblower, alleges that the White House has overturned the denials of 25 individuals, including two current senior White House officials, saying those decisions were occurring "without proper analysis, documentation, or a full understanding and acceptance of the risks.""According to Ms. Newbold, these individuals had a wide range of serious disqualifying issues involving foreign influence, conflicts of interest, concerning personal conduct, financial problems, drug use, and criminal conduct," Democratic committee staff write in the memo.During a full day of questioning before Democratic and Republican staff on the committee, Newbold aired out an array of concerns about the security clearance process, saying that the White House had stopped doing credit history checks during the review process, lacked security for personnel files and adequate staff during the review process, and allowed for an "unusually high" number of interim security clearances, including for some individuals "who were later deemed unsuitable for access to classified information," according to the memo. And Newbold contended White House officials retaliated against her because she would not easily greenlight security clearances."I would not be doing a service to myself, my country, or my children if I sat back knowing that the issues that we have could impact national security," Newbold told the committee, according to the memo.The White House did not immediately respond a request for comment, nor did Newbold.Under the law, the President does have final say when it comes to allowing employees access to classified materials, something that Newbold acknowledged to House investigators, according to the memo.But Cummings has raised concerns that the White House has ignored basic standards for providing security clearances, instead allowing his inner circle access to the country's innermost secrets without regard to the concerns raised by career professionals. 3157