Ten things you need to know this morning

Sao Paulo taxi drivers have been banned from wearing shorts or trying to banter with passengers about football. Photo / Getty Images

Your wrap of the world stories that broke overnight.

1. The US Supreme Court will consider a legal challenge to President Barack Obama's overhaul of immigration rules. The Obama plan would lift the threat of deportation from five million migrants living illegally in the US.

2. Actors David Oyelowo and Don Cheadle have joined stars critical of the Oscars for a lack of diversity among the nominations. The Selma star Oyelowo said "I am an Academy member and it doesn't reflect me. It doesn't reflect this nation." Cheadle joked on Twitter about being allowed to park cars at the Oscars.

3. The UN says violence suffered by civilians in Iraq "remains staggering" with at least 18,800 people killed there between January 2014 and October 2015. Another 3.2 million people have been internally displaced. The report said Isis (Islamic State) is holding 3500 women and children as slaves.

4. Roboticists in Germany have taught a drone to land on a moving vehicle. The German Aerospace Centre demonstrated it on a car fitted with a net and travelling at 75km/h.

5. The BBC reports that a bungled armed robbery in north Germany last June has been linked by DNA and fingerprints to wanted members of the infamous far left Red Army Faction - also known as the Baader-Meinhof gang. The anti-capitalist group killed more than 30 people in a terror campaign in the 70s and 80s but ended it in 1998. Shots were fired at an armed security van in Bremen and police have linked three former militants now in their 50s to the crime.

6. A cottage with its own underground cave has gone on sale with the asking price of 200,000 pounds in Bridgnorth, Shropshire. Artist Anthony Dracup transformed the house with a cave complete with ornate vaulted pillars before his death in 2002.

7. A British inquiry into the death of ex-KGB spy Alexander Litvinenko is expected to report its findings tomorrow and conclude that Russia was responsible for killing him a decade ago with tea laced with a rare radioactive isotope, polonium-210. He told detectives in London on his deathbed that President Vladimir Putin had directly ordered his killing.

8. Twitter says its social network has been suffering ongoing outages on computers and phones. The problem has been widely reported across Europe, the Middle East, Africa and North America.

9. AFP reports that as Syrian forces battled to recapture the rebel-held town of Salma last week, they relied on a secret weapon - motorbikes. The soldiers are adopting a tactic used by the rebels and Hizbollah militia by using the bikes to get around tiny alleys. Soldiers said they were key to recapturing the town with their speed and mobility.

10. Sao Paulo taxi drivers have been banned from wearing shorts or trying to banter with passengers about football. AFP reports that rules took effect in the Brazilian city on Tuesday aimed at whipping the cabbies into shape. They are also unable to wear flipflops and there are fines for drivers who are unshaved or have untidy hair.