The tree was embedded in the front of the bus and emergency crews were using cutting equipment to gain access to one side of the vehicle.
More top news
The social site has been overhauling many of its policies in recent weeks following repeated criticism over how it handles abusive content.
Niraparib is a PARP inhibitor belonging to a new class of drugs that target cancers with defective DNA repair systems.
According to the EU, during the transition period the UK would have to comply with the bloc's trade policy.