US climate change rallies aim to send clear message to Trump Climate activist Greta Thunberg outside the US Supreme Court on Wednesday. Photograph: Jim Lo Scalzo/EPA

Greta Thunberg will lead biggest march in New York after making impact in Congress

New research takes another step towards self-aware artificial intelligence UU

Ulster University develops the first computational brain model that explains human decision confidence and change of mind

Sponsored by Ulster University
Trump not ‘picking sides’ in Brexit negotiations, says chief of staff White House acting chief of staff Mick Mulvaney  joked that he was going to ‘put a plug in’ for Lahinch golf club where he is an overseas life member. Photograph:  The New York Times

Mulvaney says Brexit is an ‘internal’ issue but Good Friday agreement should be respected

Tax: Coping with complexity and uncertainty 1

Companies are having to deal with a deluge of new tax legislation and rules and there is no sign of a let-up, according to PwC partner, Susan Roche

Sponsored by PwC