Two experts in policy and technology who were also co-authors of an international climate assessment see reasons for optimism.

Despite technological advancements, many challenges remain in getting a drug from lab to pharmacy shelf. Reframing what is a “medicine” could expand treatment options for researchers and patients.

Solutions already exist. What’s holding humanity back is the will to get past the status quo and embrace innovation.

People with an optimistic, upbeat attitude in adolescence may lower their chances of being in the high-risk category for cardiovascular disease as adults.

New research using phone data links gratitude and optimism with mental and physical health benefits, including lower blood pressure.

When things are looking bad or worse, try some perspective, advises Professor Laura Kubzansky from the Harvard T.H. Chan School of Public Health. Optimism makes things better.

To fight climate change, we need to take people's cognitive biases into account.

For the most part, people are positive about the future for most of their lives, though the feeling declines as we get older, a new study on optimism shows.

A recent survey finds Australians feeling optimistic about their own finances, but less so about the country's overall.