Author Archive

Sarah Zhang


Cities Have Changed—For Rats

Sheltering in place produced a “natural experiment” for urban wildlife.

Health & Human Services

Deep Clean, Then Clean Again

What exactly does it mean when schools and businesses close to “deep clean” because of the coronavirus?

Public Safety

A DNA Company Wants You to Help Catch Criminals

Family Tree DNA was criticized for secretly working with the FBI. Now it’s explicitly asking potential customers to help law enforcement.


Cats Are No Match for New York City’s Rats

Despite popular wisdom, rats are too big and too fierce for cats.

Tech & Data

The Genomic Revolution Reaches the City Crime Lab

How will law enforcement handle the deluge of new information available from DNA?


What 35 Inches of Rain Can Dredge Up

Hurricane Harvey’s unusual path could hit Houston with rain and storm surges at the same time—surfacing gators, snakes, sewage, and coffins.

Health & Human Services

What to Make of the Tunnel Collapse at the Hanford Nuclear Cleanup Site

The incident is only part of the slow-motion deterioration of one of the country's most contaminated places.


Nevada Fights the Latest Attempt to Give It the Nation’s Nuclear Waste

A Congressional hearing on a bill to revive the Yucca Mountain facility pits Nevadans against everyone else.


The Government's Weed Is Terrible

… and that’s a big problem for medical marijuana research.

Health & Human Services

Flesh-Eating Worms Reach Florida's Mainland

A massive eradication effort wiped out screwworms in the U.S. 35 years ago—but then they reappeared.


America's Nuclear-Waste Plan Is a Giant Mess

An explosion caused by cat litter at a storage site in the New Mexico desert was just the beginning.


Flesh-Eating Worms Have Returned to Florida

Increased trade with Cuba might have brought screwworms back to the U.S. after they were eradicated in the states in 1982.