All Stories by Sahas Mehra
- Health & Medicine
An experimental oral vaccine may prevent invasive bacterial diarrhea
Shigella causes about 450,000 U.S. infections each year. An experimental oral vaccine protected adults in a small human trial.
- Paleontology
The world’s largest scorpion lived 415 million years ago
A prehistoric scorpion was the largest ever to exist, and it may have preyed on land and freshwater species.
- Health & Medicine
A $4 tongue swab test detects tuberculosis within 30 minutes
The new test may catch active tuberculosis in those with low access to health care or who have trouble making the phlegm needed for traditional tests.
