A new type of extinguisher that uses sound waves to put out fires has been built by two engineering students in the US. Both chemical- and water-free, the invention offers a relatively non-destructive method of fire control, which could find applications in fighting small fires in the home, and the researchers now hold a preliminary patent application for their device.
While the concept of using sound waves to extinguish flames is not new, previous attempts to realize the principle – including efforts by teams at West Georgia University and the US Defense Advanced Research Projects Agency (DARPA) – had not been successful.
Undeterred by this, as well as initial [...]
Ten years ago, I shipped the world’s first fair-trade avocados from small-scale farmers in Mexico to Europe — and my social enterprise was born.
At the time, I’d never heard of a “social entrepreneur”. I just wanted to use my business skills to help small-scale farmers transform their lives. Now, I identify as a social entrepreneur down to my bones, and my enterprise has scaled around the globe and impacted thousands of farmers in many countries.
Our mission is far from complete, but the anniversary is an occasion to reflect on the keys lessons learned during 10 life-changing years.
1. Be the change. Social entrepreneurship [...]
LENA is a closet that allows patrons to borrow fashions of their choice in order to create more sustainable fashion practices…
Clothing can be expensive and difficult to access, not to mention costly to the environment. If people could borrow clothing like they borrow books, than the trend of fast fashion, that has caused some many of the issues that plague the fashion industry, would be halted. LENA is a library exclusively created for women’s clothing, ranging from tops, skirts, dresses, shorts, purses, and more.
Patrons sign up for a specific subscription, starting at €19.95 a month to get 100 points for the month, ranging all the way up to €49.95 subscription [...]
Lina Srivastava combines media, technology, art, and storytelling for social transformation. She is the founder of a social innovation strategy group that has provided project design consultation to social impact organizations, including UNESCO, the World Bank, UNICEF. But she also works as an impact producer with filmmakers.
She has worked on the Oscar-winning Born Into Brothels andInocente, the 2007 documentary The Devil Came on Horseback, and most recently Who is Dayani Cristal? which screened at Hot Docs, Sundance and New York Film Festival in 2013 and recently won the 2015 Social Impact Media Award. She is also the transmedia producer and impact strategist of Priya’s [...]
Over the last few years I’ve seen more schools opening up access to YouTube, at least to teachers, than I had in the past. YouTube for Schools has partially contributed to that trend. Tools like ViewPure and Watchkin have made using YouTube videos in schools a little less scary too. All that said, there are still lots of schools that block access to YouTube. That’s why a few years ago I started to maintain a list of alternatives to YouTube.
This week I updated my list of alternatives to YouTube. I removed some options that have disappeared and edited information about sites that have changed. The updated list and video search engine can be found [...]