Mold growth initially grew on the plant in pillow E in the bottom left corner of the plant mat. When Scott Kelly tweeted a picture of moldy leaves on the current crop of zinnia flowers aboard the International Space Station, it could have looked like the science was doomed. In fact, science was blooming stronger than ever. What may seem like a failure in systems is actually an exceptional opportunity for scientists back on Earth to better understand how plants grow in microgravity, and for astronauts to practice doing what they’ll be tasked with on a deep space mission: autonomous gardening.
In addition to their natural beauty, the shells of two deceased specimens of Hawksbill sea turtles hold clues to the growth rates and sexual maturity of the endangered species. Radiocarbon dating of atomic bomb fallout found in sea turtle shells can be used to reliably estimate the ages, growth rates and reproductive maturity of sea turtle populations in the wild, a new study led by Duke University and NOAA researchers finds.
A new inhibitor suppresses tumor growth and cancer stem cells. The image on the left shows beta catenin (red) in cell nuclei indicating that these are cancer stem cells. All tumor cells are the offspring of a single, aberrant cell, but they are not all alike. Only a few retain the capacity of the original cell to create an entire tumor. Such cancer stem cells can migrate to other tissues and become fatal metastases. To fully cure a patient’s cancer, it is crucial to find and eliminate all of these cells because any that escape can regenerate the tumor and trigger its spread through the body.
Use the sun’s energy to heat up a tasty treat with this simple solar oven! Have you ever heard the expression that it’s so hot out you could fry an egg on the sidewalk? Have you ever wondered if it’s true? Find out with this easy, fun, and delicious solar oven science project that uses only household items and a pizza box. Plus, learn about absorption, insulation, and the sun’s energy.