NASA's Jet Propulsion Laboratory has built the capsule that will carry the Mars 2020 rover to the red planet, testing it to make sure it can keep the rover secure during the chaotic entry process, according to assembly, test and launch operations manager David Gruel. Scientists are using the real rover as well as a dummy version to ensure that everything fits as it should for the journey.
Federal Communications Commission member Brendan Carr said community college programs will be essential to train the thousands of tower technicians that will be needed to roll out 5G networks. Carr said he has joined with the National Wireless Safety Alliance to develop training programs to meet the need.
Swedish researchers found that individuals with mild cognitive impairment and Alzheimer's dementia had higher neurofilament light levels in their blood at baseline, as well as greater increases in serum NfL, compared with cognitively healthy controls, and longitudinal increases in blood NfL levels were associated with baseline cerebrospinal fluid biomarkers, poor cognitive performance, and PET and MRI measures. The findings in JAMA Neurology suggest that blood NfL "may be used together with plasma measures of beta-amyloid and tau for a comprehensive work-up of Alzheimer's disease and other dementias," said researcher Dr. Niklas Mattsson.
High-school students in Vermont have been working since November on the construction of a tiny house. The house is expected to be completed before next winter, and plans include having future classes work on similar projects.
Culinary arts students at a Texas high school are working to curb hunger by providing food for students who need it. Under the program, students sell baked goods to raise money to stock a pantry, where students can get food to take home.
A Pennsylvania school will graduate its first manufacturing academy class this year, four years after the program launched. The program, which engages the business community, is intended to help students secure jobs after graduation.
Students enrolled in a career and technical education program in California recently learned about classic cars and how they are restored. The Show N Shine event was offered as part of the school's automotive technology program.
Mercury's inner core is huge and solid, according to data collected by the MESSENGER spacecraft in its last days of studying the planet close up and detailed in Geophysical Research Letters. MESSENGER measured anomalies in Mercury's gravitational pull, helping scientists get a better idea about the planet's internal makeup.
People living 2,000 years ago in modern-day Guatemala were aware of magnetism and used it in their sculptures, a study published in the Journal of Archaeological Science suggests. Sculptors used iron-containing basalt boulders that had been struck by lightning to craft rotund figures called potbellies with facial features and navels that were magnetized.
Researchers are excavating a site in Alaska where 28 people were massacred 350 years ago as part of a series of conflicts known as the bow and arrow wars, which may have been caused by food shortages due to cooling weather. "What we do know is that the bow and arrow wars were during a period of time [called] the little ice age, where it went from quite a bit warmer than it is now to quite a bit colder in a very short period of time," said excavation co-leader Rick Knecht.