Yes, it's Agatha Christie's favorite murder weapon. But long-term exposure to arsenic in drinking water is also a major global health concern. ...read more
Nonhuman animals can certainly deceive one another — and sometimes deceive humans. But are humans the only species that tell flat-out lies? ...read more
Previous research purported that the basic building block of life appeared in our atmosphere roughly 2.5 billion years ago. A new study rejects that timeline. ...read more
Scientists plan to develop a software tool to monitor the grunts of commercial pigs and determine when they need help. ...read more