Nobody begins again in a perfectly edited life. New starts often arrive while the old life is still making demands: bills, family, illness, work, guilt, memory, and the private fear that it may be too ...

University Park, Pa. — Beginning this week, scientists and nonscientists now have easy access to information about when living species and their ancestors originated, information that previously was ...

You have probably seen the images of the surface of Mars, beamed back by NASA's rovers. What if there were a time machine capable of roaming Earth during its remote geological past, perhaps even going ...

One often thinks that the early embryo is fragile and needs support. However, at the earliest stages of development, it has the power to feed the future placenta and instructs the uterus so that it ...

In the Letter to the Editor “A medical matter,” it was stated that at the instant of conception a new human being is created with a unique soul and unique DNA. But, what about identical twins or ...

MINING FOR RNA: James Ferris's group at Rensselaer re-creates how nucleotides might have joined on ancient mineral surfaces. The RNA world hypothesis has fueled diverse research approaches, drawing ...