On the last Saturday night in March, millions of people around the world switch off their lights and electronic devices for an hour. Earth Hour is once again near, and people are being encouraged to take this step in joining the movement to put an end to climate change.
Nearly 30 000 people contributed to the crowdfunding drive to develop the Ubuntu Edge, a smartphone running the Ubuntu Unity OS. It showed people were hungry for something new. That phone is still in development phase, but until it comes to market, say hallo to the Ubuntu phone.
Fear of the dangers of advanced new technologies such as robotics and 3D printing is not only unfounded and exaggerated - it ignores the huge potential benefits technology offers the emerging world.
The problem of acid water draining from abandoned mine dumps and shafts has long seemed insurmountable, with some estimates putting the pollution on the Witwatersrand as high as 350 litres a day. New technology from Dow Sub-Saharan Africa is finally offering a solution.
Power ships are proving to be a quick-fix temporary solution to electricity constraints around the world. In Africa, they are used to good effect in Ghana. The floating power stations are either anchored off shore or moored at quayside and transmit power through cables or transmission lines.
It looks like something from a sci-fi film, with its massive tower and thousands of wall-like solar mirrors set in an arid and deserted landscape. But Khi Solar One, Africa's first concentrated solar power project, is a very real example of the future of renewable energy.