Spring Break Camps are offered at PacSci in Seattle and Mercer Slough Environmental Education Center in Bellevue for grades K-5. Ignite (点燃) your child’s curiosity at one of our innovative week-long camps from April 8 — 12, 2024.

Extended care is an optional add-on on the last day, which promptly ends at 6 p.m. Any unplanned extended care or late pick-ups from camp results in a fee of $ 20 for 1 — 10 minutes late, plus $ 10 for every 10-minute interval (间隔) thereafter.

The first word on an ancient Roman scroll carbonized by Mount Vesuvius’ eruption in 79 C.E. has recently been decoded, opening the door to eventually decoding the rest of the texts which haven’t been read in the past 2,000 years.

The scroll, along with some 800 scrolls unearthed in the ancient Roman city of Herculaneum, looks more like a burnt log. It’s so fragile (易碎的) that it would fall apart if researchers tried to unroll it. Early attempts to unroll and read it caused irreversible (不可逆的) damage and no such attempts have been made since the 19th century.

Brent Seales, a computer scientist from the University of Kentucky has been perfecting CT scan technology to see what’s inside the scrolls without actually touching them, a process he calls “virtual unwrapping”. Because commonly the ink contains metal, it can be seen on Seales’ CT scans. Unfortunately, the Herculaneum scrolls were written in carbon-based ink made from charcoal (木炭) and water. When Seales scanned them, nothing appeared to the naked eye.

Earlier this year, Seales’ team launched “the Vesuvius Challenge”, encouraging people to use AI to further explore researchers’ scans. In early August, a contestant called Casey Handmer got a reward of $10,000 for being “the first person to find substantial, convincing evidence of ink within the unopened scrolls.” As a follow-up, a 21-year-old computer science student Luke Farritor drew inspiration from his discovery and created a machine-learning algorithm (算法) that identified ten clear letters spelled as the English word “purple”, marking the first dive into an unopened ancient book.

These discoveries are critical steps toward decoding the remaining unopened scrolls. “Some 95 percent of the material from this important philosophical periods of humanity is lost,” says Robert Fowler, a classicist at the University of Bristol. “Recovering them would transform our knowledge of the ancient world in ways we can hardly imagine. The impact could be as great as the rediscovery of manuscripts during the Renaissance,” he adds.

Humans have moved species of plants and animals around, introducing them to new habitats, for as long as we’ve been on Earth. Many of these introduced species have been beneficial, such as European honeybees that have proved to be excellent pollinators (传粉者) in the US. But that’s not the case for European beachgrass introduced to sand dunes (堆) on the coast of California. Beachgrass was planted to stabilize the ever-shifting dunes and it worked well. But the beachgrass is usually the only species living on dunes where there once were a large variety of native grasses and wildflowers.

It’s true that not all non-native species become invasive, but those that do adapt to the local environment, spread rapidly and outcompete native wildlife, often due to the absence of natural enemies that can keep their population in check. The spread of invasive species leads to the extinction and biodiversity loss on Earth, causing financial and ecological damage, according to the leading scientists.

Some campaigns have been launched to eradicate invasive species, including pesticides spray, manual removal and biological controls. Interestingly, a growing number of chefs and conservationists even have a far simpler idea: Eat them to beat them. Apart from providing favorable habitats for local species, perhaps the best way to fight invasive species is to prevent them from occurring in the first place. When boating, clean the boat thoroughly before transporting it to a different body of water. Don’t “pack a pest” when travelling, for fruit and vegetables, plants, insects and animals can carry pests or become invasive themselves. If you plan to own an alien pet, do your research and plan ahead to make sure you can commit to looking after it instead of releasing it into the wild. When you transfer an organism, you can also transfer its neighbors. Think before you move an animal or plant around!