Kathy Niakan, a developmental biologist at the Francis Crick Institute in London, used the CRISPR gene editing technique to find out how a gene affects the growth of human embryos. Courtesy of The Francis Crick Institute hide caption

An artist's rendition of the future Europa Clipper probing Jupiter's moon Europa for potential life. NASA hide caption

Affordable Care Act navigators helped guide those looking for insurance during an enrollment event at San Antonio's Southwest General Hospital last year. Beyond helping with initial enrollment, navigators often follow up with help later, as an applicant's income or job status changes. Eric Gay/AP hide caption

Sophia Spencer and Morgan Jackson co-wrote a scientific paper on Twitter, entomology and women in science, after a tweet about Sophia's love for bugs went viral. Courtesy of Nicole Spencer hide caption

A map in Where the Animals Go shows how baboons move near the Mpala Research Centre in Kenya, as tracked by anthropologist Margaret Crofoot and her colleagues in 2012. Margaret Crofoot, University of California, Davis; Damien Farine, Max Planck Institute for Ornithology /Courtesy of Oliver Uberti hide caption

Oysters, shown out of their shell, collect tiny plastic particles while in the water. These microplastics can eventually make their way into your dinner. Ken Christensen/KCTS Television hide caption

North Koreans walk in downtown Pyongyang on April 18. Wong Maye-E/AP hide caption

While benzodiazepines and SSRI antidepressants are not risk-free, says Yale psychiatrist Kimberly Yonkers, "it should be reassuring that we're not seeing a huge magnitude of an effect here" on pregnancy. Hanna Barczyk for NPR hide caption

A Houston resident walks through waist-deep water while evacuating her home after severe flooding following Hurricane Harvey in north Houston. Win McNamee/Getty Images hide caption

Matthew Rockloff and Nancy Greer give their acceptance speech after winning the Ig Nobel Economics Prize during ceremonies at Harvard University in Cambridge, Mass., on Thursday. The pair won for their experiments to see how contact with a live crocodile affects a person's willingness to gamble. Michael Dwyer/AP hide caption

We're at this break point where we can read life code. We can copy life code. We can edit life code. - Juan Enriquez Ryan Lash/Ryan Lash/TED hide caption

Sam Harris on the TED stage. Bret Hartman/Bret Hartman / TED hide caption