Scientists are genetically altering pigs so their organs are more humanlike to address a severe shortage of transplantable human organs. More than 100,000 people are on the U.S. transplant list ...

More recently, early-stage human kidneys have even been grown in pig bellies. The world of bioengineering isn’t for the faint of heart. Much of this tinkering is done in the service of one day ...

After years of trial and error, scientists have finally done something incredible: They have successfully grown human stem cells in a pig embryo. Why would anyone do this? Turns out, many ...