A recent edition of Scientific American’s “Science Quickly” news roundup gathered several notable research and space stories. The following is a neutral summary of the main items, with the original reporting linked at the end.
A warning on women’s cardiovascular health
A scientific statement from the American Heart Association, published in the journal Circulation, projects that nearly six in ten women in the United States could be living with some form of cardiovascular disease by 2050. A central driver is hypertension, which the statement estimates will rise from about 48.6% of adult women in 2020 to roughly 59.1% in 2050, alongside increases in diabetes and obesity. The trend is especially pronounced among younger women: close to one in three women aged 22 to 44 are expected to have some form of cardiovascular disease, compared with fewer than one in four today. The statement attributes much of the increase to factors that begin in childhood — limited physical activity and poor diet — and to what its authors describe as deep disparities linked to race and ethnicity. Karen E. Joynt Maddox, who chaired the writing group, framed the findings as a call to action to address risk factors early in life.
Abortion restrictions and the OB-GYN workforce
A separate study published in the journal Health Economics found that laws restricting abortion access — known as targeted regulation of abortion provider, or “TRAP,” laws — are associated with a reduction in the overall number of obstetricians and gynecologists. The analysis also reported that applications from midwives declined in states with restrictive TRAP laws over the period studied, from 1993 to 2021, pointing to broader effects on reproductive-health staffing beyond abortion services specifically.
Artemis II delayed again
NASA’s plan to launch its Artemis II mission in March did not hold. After setting a March 6 target date, the agency reversed course within about a day when engineers observed an interrupted flow of helium in the upper stage — the interim cryogenic propulsion stage — of the Space Launch System rocket. The rocket and Orion spacecraft were rolled back from the launch pad to the Vehicle Assembly Building for inspection and repair, pushing the roughly ten-day crewed flight around the Moon toward a later window. NASA noted a similar issue had appeared on the earlier Artemis I flight. The agency subsequently reported fixing the helium-flow problem, with launch opportunities opening in April.
Oceans absorbing vast amounts of heat
The roundup also covered ocean warming, citing data indicating that the upper layers of the world’s oceans absorbed an enormous quantity of excess heat over recent decades. Because most fish are cold-blooded and adapted to specific temperature ranges, warmer water — which also holds less oxygen — places them under stress. Many species are shifting away from equatorial regions toward the poles in search of cooler water, and researchers say marine heat waves, themselves a product of climate change, can mask the scale of the resulting losses.
Why female reindeer keep their antlers
A study by researchers examining reindeer remains in the Arctic National Wildlife Refuge offered a clue to why female reindeer retain their antlers longer than males. Animals sometimes gnaw bones to recover calcium and phosphorus, a behaviour called osteophagy. The researchers found that antlers showed far more gnawing than other skeletal remains and were chewed primarily by reindeer themselves, rather than by carnivores. Because females shed their antlers shortly after giving birth on the calving grounds, the researchers suggest the antlers may serve as a store of key minerals that supports the demanding period of raising a calf — particularly relevant for an animal that undertakes some of the longest migrations of any land mammal.
Limitations and what to watch
Several of these items are projections or single studies rather than settled conclusions. The cardiovascular figures are model-based estimates that depend on assumptions about future behaviour and policy, and the “some form of cardiovascular disease” and hypertension-specific numbers measure different things, so they should not be used interchangeably. The workforce, ocean-heat, and reindeer findings each come from individual studies whose specifics await replication. Readers seeking precise figures should consult the primary sources directly.
The original segments aired on Scientific American’s Science Quickly. Primary sources include the American Heart Association statement and NASA’s Artemis II update.
