The US Navy is developing unmanned aerial vehicles (UAVs), or drones, that can be launched from a cannon and "swarm" in a co-ordinated attack.
Researchers reveal the secrete of an octopus's unique movement, revealing how the animals co-ordinate their eight, flexible arms.
Warnings from leaders about other parties, and about the funding of the NHS on day 18 of the election campaign.
Genetic differences could explain why some people are quicker thinkers in middle age and later life, a study of data from 30,000 people suggests.
The New York City Council has approved a marker recognising the contributions of slaves to the city's founding and economy
Lewis Hamilton tells BBC Sport about another perfect result, the Bahrain challenge and champagne celebrations.
Pope Francis announces his first visit to Bolivia, Paraguay and Ecuador in July, with leaders from host countries welcoming the news.
A limited change to Northern Ireland's abortion law, to allow terminations in cases of fatal foetal abnormality, is recommended by Stormont's Department of Justice.
The decision to hand Eugene the 2021 World Athletics Championships is "unfair", says the Swedish Athletics Association.
A body found at a farm north of Glasgow is missing Irish student Karen Buckley, Police Scotland confirm.
Shares in arts and crafts marketplace Etsy surge 120% in their US market debut, valuing the 10-year-old Brooklyn firm at more than $4bn.
Nico Rosberg admits he needs to turn the tables on Lewis Hamilton to boost his world title bid - starting in Bahrain this weekend.
Unite union members at the Sellafield nuclear reprocessing plant in Cumbria vote to take industrial action in a row over health and safety, the union says.
Earthquakes, including one measuring as magnitude 5.8, strike northern China, reportedly killing one person and damaging hundreds of houses.
Somalia's FA president Adbi Qani hopes his country can compete in the 2019 Nations Cup and end an absence that stretches back to 1974.
Images from the campaign trail: 16 April
Fiona Trott speaks to Gateshead pensioner Alan Barnes, who has moved in to a new home after he was given given thousands of pounds in online donations.
The leaders of five of Westminster's opposition parties are due to appear in a live election debate on Thursday.
The Alliance Party will bring a "unique" voice to Westminster, ensuring the people of Northern Ireland are heard, the deputy leader says.
Observations from space assist the search for new locations to site geothermal power stations.