141K views · 739 reactions | Scientists have discovered a lake of “liquid water” on Mars around 12 miles wide and at least a metre deep. Astrobiologist Manish Patel and astronomer Tom Kerss discuss what the significance of the discovery. | Channel 4 News | Facebook

34K views · 146 reactions | "I feel like all the clinically vulnerable children have been forgotten about." Families urge the government to offer the Covid jab to vulnerable children, after the regulator approved use of the Pfizer vaccine in 12 to 15-year-olds last month. Anja Popp reports. | Channel 4 News | Facebook