Ties van der Meer doesn't know how many siblings he has. The 47-year-old was conceived at a private fertility clinic in the Netherlands using sperm provided by an anonymous donor. After the Netherlands banned anonymous donation in 2004, the doctor who ran the clinic destroyed records that might have identified those donors, he says. He...

This is today's edition of The Download, our weekday newsletter that provides a daily dose of what's going on in the world of technology. Sperm donors need limits, says a European fertility group Ties van der Meer doesn't know how many siblings he has. The 47-year-old was conceived at a private fertility clinic using sperm...