NASA NASA and the European Southern Observatory announce the discovery of four new Earth-like planets in the Goldilocks zone of the star TRAPPIST-1, in addition to the three discovered there last year.
Transgender rights in the United States The Trump administration revokes Obama-era orders on protection of gender identity under Title IX.
2017 Olathe, Kansas shooting In an apparent hate crime, an Indian engineer is shot dead and another injured in Olathe, Kansas.
Hong Kong Chief Executive Former Chief Executive of Hong Kong Donald Tsang is sentenced to 20 months in prison for corruption, becoming the highest officeholder in Hong Kong's history to be convicted.
South Africa South Africa's North Gauteng High Court rules the government's decision last October to withdraw from the Rome Statute of the International Criminal Court was unconstitutional, and instructs the government to revoke its notice of withdrawal.
2017 Mexico–United States diplomatic crisis Mexican Foreign Minister Luis Videgaray Caso rejects and condemns the United States's new plan on deporting undocumented immigrants, stating that Mexico cannot "accept unilateral decisions imposed by one government on another."
Headscarf controversy in Turkey The Turkish government lifts the ban prohibiting female army officers from wearing a Hijab. The military is the last Turkish institution to end the ban.
Amnesty International Amnesty International releases a report criticizing the rise of populist leaders such as Donald Trump of the United States, Viktor Orbán of Hungary, Rodrigo Duterte of the Philippines and Recep Tayyip Erdoğan of Turkey.
Yemeni Civil War (2015–present) A Houthi missile attack on a Yemeni military camp near the port city of Mocha kills Major General Ahmed Saif al-Yafei, Yemen's deputy chief of staff, and several others.
Syrian civil war U.S.-backed SDF forces on two fronts meet up northeast of Raqqa, encircling a pocket of villages still held by ISIS.