A critical NASA mission in the search for life beyond Earth, Mars Sample Return, is in trouble. Its budget has ballooned from US$5 billion to over $11 billion, and the sample return date may slip from the end of this decade to 2040.The mission would be the first to try to return rock samples from Mars to Earth so scientists can analyze them for signs of past life.NASA Administrator Bill Nelson said during a press conference on April 15, 2024, that the mission as currently conceived is too expens ...read more

Age is a risk factor for a host of diseases. Heart disease and stroke, most cancers, osteoarthritis, and, of course, dementia become far more likely as we age. Though we hear about it less often, aging can also be hard on your eyes. Several conditions that affect older people can lead to vision loss and even blindness. “However, vision loss is not an inevitable part of aging,” explains Roma Patel, associate professor of ophthalmology at Baylor College of Medicine and clinical spokesperson f ...read more

About a trillion tiny particles called neutrinos pass through you every second. Created during the Big Bang, these “relic” neutrinos exist throughout the entire universe, but they can’t harm you. In fact, only one of them is likely to lightly tap an atom in your body in your entire lifetime.Most neutrinos produced by objects such as black holes have much more energy than the relic neutrinos floating through space. While much rarer, these energetic neutrinos are more likely to crash into so ...read more

Myopia, or the need for corrected vision to focus or see objects at a distance, has become a lot more common in recent decades. Some even consider myopia, also known as nearsightedness, an epidemic.Optometry researchers estimate that about half of the global population will need corrective lenses to offset myopia by 2050 if current rates continue – up from 23% in 2000 and less than 10% in some countries.The associated health care costs are huge. In the United States alone, spending on correcti ...read more

In April 2024, the cicadas are starting to buzz. Reports of cicada broods emerging in the South of the U.S. are underway. The insect’s signature high-pitched and alarming sound has already led some people to call law enforcement in South Carolina to report a siren-like noise. However, that noise is not a siren, but periodical cicadas. These cicadas, broods XIX and XII, emerge in cycles of 13 to 17 years. It’s estimated that in 2024, trillions of cicadas will emerge from different states in t ...read more

In 1956, the U.S. Federal Aid Highways Act provided $25 billion to create a network of roads across the nation. In today’s money, that’s equivalent to $215 billion.The act had huge economic and social consequences. It helped boost the economy and create an automobile-centered society. But the new freeways also divided communities, disrupted pedestrian movement and broke social ties. In some notorious cases, freeway building was used to clear working-class Black communities and segregate citi ...read more

You did it! As of April 26, you've completed 1,024,319 acts of science, with four days still to go! But even though we've reached our target and April ends next week, we’re not skimping on fun citizen science activities! We’re focusing on medicine and public health, along with a big One Million Acts of Science Celebration. April 28: Help the Girl Scouts fight Alzheimer's Disease!For the month of April, Girl Scouts Overseas is playing Stall Catchers to fight Alzheimer's Disease and you can he ...read more

The terror bird — an extinct group of carnivorous birds that once dominated the current territory of Argentina, Brazil, Chile, and Uruguay after the extinction of dinosaurs — persisted between 23 million years ago and up to about 17 thousand years ago.With the head of an eagle, curved beak, body and legs of an African ostrich, and claws as big as those of the Jurassic Park raptors, “you wouldn't want to be in a cage with one of them,” remarked Washington Jones, a paleo-ornithologist at t ...read more

“We haven’t had a full night’s sleep since our son was born eight years ago,” said Mrs. B, pointing to her son’s dry, red and itchy skin.Her son has had eczema his entire life. Also known as atopic dermatitis, this chronic skin disease affects about 1 in 5 children in the industrialized world. Some studies have found rates of eczema in developing nations to be over thirtyfold lower compared with industrialized nations.However, rates of eczema didn’t spike with the Industrial Revoluti ...read more

In March 2024, a group of boaters in Venice Beach, Florida ran into a great white shark feeding on a whale carcass. While white sharks’ diet consists primarily of large marine mammals such as seals and sea lions, scavenging off of whale carcasses is an important way for them to maintain their diet. From the southern tip of South Africa to the California coast, we’ve observed white sharks, also known as great white sharks, engaging in fascinating hunting patterns from shorelines around the w ...read more