‘We may never see a population this big ever again,’ butterfly expert Chip Taylor says.

Under pressure, hydrofluoric acid can become a noxious vapor. But activists argue the industry’s protections of using additives are based on shaky science—or on no evidence at all.

A new Kaiser Health News database, ‘Pharma Cash to Congress,’ tracks campaign donations from drugmakers over the past 10 years.

Your favorite pint could get more expensive—or not be on the menu at all, according to a new report.

Our bodies evolved in a different geological era, and as we stand upon the crest of yet another, humans are showing signs of the stress these changes are placing on us.

An investigation in the British Medical Journal shows Ulm Ulmsted earned $1 million from Johnson & Johnson to make clinical trials seem successful.

Progress containing the deadly disease may be tenuous thanks to the proliferation of guerrilla groups and intensifying violence in the east of the Democratic Republic of Congo.