How a plastic-munching caterpillar could help save the earth

Even the smallest among us can be big heroes. Take the lowly wax worm, for instance.

Opioid epidemic may be underestimated, CDC report says

Experts say the United States is in the throes of an opioid abuse epidemic, causing 91 overdose deaths each day. Yet the total number of opioid-related deaths may still be underestimated, suggests new research from the US Centers for Disease Control and Prevention.

Cherokee Nation sues pharmacies, drug distributors over opioid epidemic

The Cherokee Nation filed a lawsuit against pharmacies and drug distributors on Thursday, alleging that the companies have not done their part to curb the opioid epidemic that has gripped the tribal community.

First malaria vaccine to be widely tested in Africa next year

The World Health Organization announced Monday that it has the go-ahead to try the first malaria vaccine in the field in real-world settings next year. The organization made the announcement on the eve of World Malaria Day.