In an evolving branch of forensic science, genealogists help solve crimes, sometimes identifying suspects with the DNA of distant relatives they’ve never met. As cold cases yield, concerns about privacy issues persist.
Ultrasound isn’t just for images. Sonogenetics and other promising technologies let researchers use focused sound waves to control genes and entire cells deep in the tissues of living animals, without surgery.
They worm into snails and infect the brains of fish. They’ve also found their way into Kevin Lafferty’s heart. He sees them as beautiful examples of sophisticated evolution, and as keys to ecosystem balance.
Evolution made insect ears many times over, resulting in a dazzling variety of forms found in spots all over the body. Biologists are digging deep into some of those ears to figure out how and why they came to be.
The eight-legged weavers have been hunting insects for almost 400 million years, flaunting their long history in a rich array of architectures. Scientists are still figuring out the taxonomy of them all.
A few rare viruses can reach the fetus when pregnant women are infected, with tragic result. As explored in this Q&A, researchers are figuring out how the placenta acts as protector and how some pathogens slip through.