The murky, unregulated world of anti-aging stem cell therapy

Stem cells are the new focus of the rich and famous, with Hollywood stars reportedly spending tens of thousands of pounds a year on expensive therapies offered by private longevity clinics that promise to regenerate the aging body. The latest taker is 84-year-old John Cleese, who revealed in an interview earlier this week that he … Read more

Scientists are going ever further in their attempts to bring an extinct giant back to life

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. A daring plan to genetically engineer a version of the woolly mammoth, the Ice Age tusk giant that disappeared 4,000 years ago, is making some progress, according to the scientists involved. The long-term goal is … Read more

Scientists are going ever further in their attempts to bring an extinct giant back to life

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. A daring plan to genetically engineer a version of the woolly mammoth, the Ice Age tusk giant that disappeared 4,000 years ago, is making some progress, according to the scientists involved. The long-term goal is … Read more

Synthetic human embryos allow researchers to study early development while bypassing ethical and logistical hurdles

Embryonic development, also called embryogenesis, is a cornerstone in understanding the origins of life. But studying this marvel of complex and layered biological processes in humans faces significant challenges. Early stage human embryos are difficult to obtain. Then there are ethical issues surrounding its use. This has made it difficult for scientists to understand early … Read more

FDA Approves 2 Gene Therapies for Sickle Cell Disease. One is the first to use the editing tool CRISPR

Regulators on Friday approved two gene therapies for sickle cell disease that doctors hope can cure the painful, inherited blood disorder that mainly affects black people in the US. The Food and Drug Administration said the one-time treatments can be used for patients 12 years and older with severe forms of the disease. One, made … Read more