Some 2,000 years after they were first erected, Ancient Roman harbours made from concrete are still standing across Europe. Meanwhile, more modern constructions have proved far less durable, crumbling into the water in a mater of decades. Finally, scientists have solved the puzzle of what made the ancient concrete so strong — and they think the discovery could make modern buildings more environmentally friendly. Concrete used for ancient sea walls was made by mixing lime,
Mystery of 2,000-year-old Roman concrete solved by scientists
More of Today's Solutions
Changemakers of the week: Laguna Food Pantry and The Rama Tree Foundation
BY THE OPTIMIST DAILY EDITORIAL TEAM Every day at The Optimist Daily, we share stories of solutions from around the globe. While we celebrate innovations ...
Read MoreHow to keep an eye on your eye health
As we age, we can become more vulnerable to developing age-related eye conditions, diseases, and vision loss. The best way to stave off, or ...
Read MoreThis is how Australia reduced plastic litter on its beaches by 30 percent
When it comes to reporting about plastic waste on beaches, the news is rarely good. But one report paints a more positive picture of ...
Read MoreCrab Trapper Whiskey: capturing invasive species and putting them in whiskey
An occasionally neglected fact of conservation is the encroachment of invasive species. Some non-native animals can wind up consuming all available resources for endangered ...
Read More
