The latest from the World Economic Forum:
UNHCR chief: Return of Syrian refugees to their homeland must be voluntary
Geopolitical headwinds will not bring a 2019 recession, Investcorp head says
Afghan President Ashraf Ghani denies US withdrawal agreement
Antonio Guterres tells Davos the world is on course for disaster
MATCH INFO
Manchester City 2 (Mahrez 04', Ake 84')
Leicester City 5 (Vardy 37' pen, 54', 58' pen, Maddison 77', Tielemans 88' pen)
Man of the match: Jamie Vardy (Leicester City)
WHAT IS A BLACK HOLE?
1. Black holes are objects whose gravity is so strong not even light can escape their pull
2. They can be created when massive stars collapse under their own weight
3. Large black holes can also be formed when smaller ones collide and merge
4. The biggest black holes lurk at the centre of many galaxies, including our own
5. Astronomers believe that when the universe was very young, black holes affected how galaxies formed
