21st February - "Harder"
The former head of Microsoft, Bill Gates, has warned that the world could be in great danger from bio-terrorism.
19th February - "Easier"
We may have to change our thinking about how many continents there are. Geologists say there is an eighth continent - Zealandia.
17th February - "Harder"
A new study suggests that marital bliss has beneficial health effects. The research is from Carnegie Mellon University in the USA.
15th February - "Easier"
A team of engineers has created a super-thin material that could help keep buildings cool.
13th February - "Harder"
There is a new Batman movie in the making and a director for it could be announced soon.
11th February - "Easier"
The High Court in Kenya has blocked the Kenyan government's attempt to close the largest refugee camp in the world.
9th February - "Harder"
The television maker Vizio has agreed to pay $2.2 million to settle claims that it collected data from 11 million people without their consent.
7th February - "Easier"
Many models have to get down to a very unhealthy weight to keep their modeling agency happy.
5th February - "Harder"
Researchers from the University of Michigan in the USA have found that the brain of astronauts changes shape during spaceflight.