(Source: John Morgan/flickr)

A chemical in egg whites has been used to produce hydrogen, a clean, carbon-free source of energy.

Small steps like switching to public transport and sharing car shrank families' emissions by 40 percent.

Shave off their 40% emissions with small everyday actions such as car sharing, switching to public transport, etc.

(Source: Casa Velas Hotel/flickr)

The effort underscores how fitness industry can embrace innovation to educate people about the health of the planet.

(Source: Sam-Cat/flickr)

The uninsured, the health-illiterate, women, minorities and immigrants constitute the under-represented sections in the datasets.

(Source: tmmmb/flickr)

You are gulping down thousands of plastic particles per liter of bottled water, warns a study.