March 16, 2021 at 11:00 am
An ocean’s worth of water may be lurking in minerals below Mars’ surface, which could help explain why the Red Planet dried up.
Once home to lakes and rivers, Mars is now a frigid desert (
SN: 11/12/20). But measurements of atmospheric water loss made by spacecraft like NASA’s MAVEN orbiter are not enough to account for all of Mars’ missing water which was once so abundant it could have covered the whole planet in a sea up to 1,500 meters deep. That’s more than half the volume of the Atlantic Ocean.
Science.
The finding “helps bring focus to a really important mechanism for water loss on Mars,” says Kirsten Siebach, a planetary geologist at Rice University in Houston who was not involved in the work. “Water getting locked up in crustal minerals may be equally important as water loss to space and could potentially be more important.”
March 12, 2021 at 2:46 pm
In the wake of the past year’s Black Lives Matter protests, achieving “diversity” across domains has become a pressing societal concern.
Science Advances. That means devising ways to turn talk of diversity into action for instance, diversifying a workforce or a neighborhood can be subjective.
“Americans almost always talk about diversity in this positive but very, very ambiguous light,” Xu says. “So people can agree that diversity is good without agreeing on what diversity actually looks like.”
Xu and colleagues focused on racial diversity. The team tested what that looks like to different groups of people by showing them hypothetical neighborhoods, each with different racial and ethnic makeups. The team surveyed 1,803 U.S. adults split almost evenly among four groups white, Black, Latino and Asian. All the neighborhoods had one dominant group, making up 50 to 90 percent of residents, one midsize group and one minority group makin
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Vaccine equity, global vaccination, and support for strained healthcare workers were on the agenda at a Senate Health, Education, Labor and Pensions Committee hearing Tuesday.
In her opening remarks, Patty Murray (D-Wash.) noted that the American Rescue Plan, which was passed by the Senate over the weekend, includes more funding for vaccine distribution, and for community health centers, as well as for testing, contact tracing, and sequencing to identify SARS-CoV-2 variants, along with monies to recruit and train 100,000 public health workers.
Equity in L.A.
Jerry Abraham, MD, MPH, director of Kedren Health Vaccines in Los Angeles, highlighted CDC data showing that Black and Latinx people who contract COVID-19 are dying at twice the rates of other populations. His organization has taken down multiple barriers to getting vulnerable residents immunized, such as a lack of transportation, internet access, documentation, or insurance, he stressed.
contain
dietary cholesterol. However, they also tend to be high in saturated and trans fat and trigger the liver to
make more cholesterol. Other foods, such as palm oil, palm kernel oil, and coconut oil, contain saturated fat that can increase so-called “bad” cholesterol.
For some people, these foods represent a major source for increasing blood cholesterol. Because the typical Western diet is loaded with these foods, rising cholesterol levels have led the way to an epidemic of health problems linked to high cholesterol, says Trejo Gutierrez, MD, a cardiologist with the Mayo Clinic in Jacksonville, Florida.
Though some experts dispute the direct link between high blood cholesterol levels and cardiovascular disease (CVD), major organizations like the National Heart, Lung, and Blood Institute (NHLBI) maintain that high blood cholesterol levels play a role in the development of conditions such as atherosclerosis, carotid artery disease, coronary artery disease, heart attack, s
30 celebrities who were Ivy Leaguers
By Leah Pace of Stacker |
30 celebs you didn t know were Ivy Leaguers
These days, college admissions are a coveted get for many students and their families (with some even going to criminal lengths to make it happen, as seen in the nationwide college admission scandal). Standing apart from the other thousands of colleges in the United States are the Ivy Leagues, which have been put on the highest pedestal of all. The name “ivy league” isn t just a metaphor: These universities boast greenery covered buildings that originated from ivy-planting sessions in the 1800s.
Today, the Ivy League is comprised of the eight private universities that make up a specific athletic conference in the Northeast. The group includes Brown University in Providence, R.I., Cornell University in Ithaca, N.Y., the University of Pennsylvania in Philadelphia, Yale University in New Haven, Conn., Harvard University in Cambridge, Mass., Princeton University in