Science

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

Using radar, a Nasa spacecraft, Lunar Reconnaissance Orbiter (LRO), has confirmed the existence of caves beneath the lunar surface. Here’s why such geological features will be key for establishing a base on the Moon, and what they can tell us about Earth and our Moon’s shared cosmological origins.

Lunar orbiting satellites first spotted pits on the Moon’s surface decades ago. Many of these were thought to be openings that connected to substantial underground tunnels that form through volcanic processes, but only now has this been confirmed through the analysis of radar data.

When considering human settlements on the Moon, Mars and further afield, much attention is given to the travel times, food and radiation risk. We’ll undoubtedly face a harsh environment in deep space and some thinkers have been pointing to genome editing as a way to ensure that humans can tolerate the severe conditions as they venture further into the solar system.

In January, I was fortunate to attend a much-anticipated debate between astronomer royal Lord Martin Rees and Mars exploration advocate Dr Robert Zubrin. The event at the British Interplanetary Society took on the topic of whether the exploration of Mars should be human or robotic.

Fashion is a dynamic business. Most apparel brands make at least two to four collections per year. While selling current seasonal collections, brands plan for the next ones at least a year in advance, identifying market trends and materials. The selling window is around three months, and unsold inventories represent financial loss.

Fast fashion companies introduce new lines even more frequently, reducing the amount of time needed to design, produce and market new items.

Plastic microbeads, those tiny troublemakers found in the personal care products of the early 1990s to the late 2010s, wreak havoc on the environment. These minuscule bits, smaller than a sesame seed, escape the clutches of wastewater treatment plants, accumulating in oceans and rivers where they pose a threat to marine life.

Thankfully, soaps and scrubs containing plastic microbeads are impossible to find on today’s store shelves. In recent years, many countries have recognized these microbeads as a source of marine plastic pollution and banned them from personal hygiene products. Microbead bans make room for more environmentally friendly substitutes, allowing consumers to continue to experience that satisfying deep-cleaning feeling without harming the environment.

Vaccinations have provided significant protection for the public against infectious diseases. However, there was a modest decrease in support in 2023 nationwide for vaccine requirements for children to attend public schools.

In addition, the presidential candidacy of Robert F. Kennedy Jr., a leading critic of childhood vaccination, has given him a prominent platform in which to amplify his views. This includes an extensive interview on the “Joe Rogan Experience,” a podcast with over 14 million subscribers. Notably, former President Donald Trump has said he is opposed to mandatory school COVID-19 vaccinations, and in a phone call Trump apparently wasn’t aware was being recorded, he appeared to endorse Kennedy’s views toward vaccines.

Researchers have been attaching tags to the foreheads of seals for the past two decades to collect data in remote and inaccessible regions. A researcher tags the seal during mating season, when the marine mammal comes to shore to rest, and the tag remains attached to the seal for a year.

A researcher glues the tag to the seal’s head – tagging seals does not affect their behavior. The tag detaches after the seal molts and sheds its fur for a new coat each year.

OpenAI on Thursday said it was putting its artificial intelligence engine to work in a challenge to Google's market-dominating search engine.

The startup behind ChatGPT announced that it is testing a "SearchGPT" prototype that is "designed to combine the strength of our AI models with information from the web" to answer online queries quickly and to provide relevant sources.

SpaceX's stalwart Falcon 9 rocket has been cleared for launch after experiencing a rare failure earlier this month, officials said Thursday.

The rocket, a prolific launch vehicle that propels both satellites and astronauts into orbit, experienced an anomaly during a launch on July 11 in its second stage booster that meant it failed to deploy 20 Starlink satellites at a high enough altitude, and all burnt up on re-entry through Earth's atmosphere.

When milliseconds can mean the difference between silver and gold, endurance athletes in sports like marathon running, cycling, rowing and swimming optimize every aspect of their physiology for a competitive edge.

Many of these efforts result in enhancing the performance of mitochondria, the tiny but mighty energy-generating powerhouses within your cells. Carefully calibrated doses of exercise combined with beneficial stress – altitude, cold and heat – and optimized recovery in the form of nutrition, meditation and sleep, positively affect the number and health of mitochondria in the cells of your muscles, heart and brain.

For many people, the aroma of freshly brewed coffee is the start of a great day. But caffeine can cause headaches and jitters in others. That’s why many people reach for a decaffeinated cup instead.

I’m a chemistry professor who has taught lectures on why chemicals dissolve in some liquids but not in others. The processes of decaffeination offer great real-life examples of these chemistry concepts. Even the best decaffeination method, however, does not remove all of the caffeine – about 7 milligrams of caffeine usually remain in an 8-ounce cup.

Cheese is a relatively simple food. It’s made with milk, enzymes – these are proteins that can chop up other proteins – bacterial cultures and salt. Lots of complex chemistry goes into the cheesemaking process, which can determine whether the cheese turns out soft and gooey like mozzarella or hard and fragrant like Parmesan.

In fact, humans have been making cheese for about 10,000 years. Roman soldiers were given cheese as part of their rations. It is a nutritious food that provides protein, calcium and other minerals. Its long shelf life allows it to be transported, traded and shipped long distances.