Calendar – Click on Date for links entered on that Day
- Newshour – Apollo 11: a landmark in history – BBC Sounds July 16, 2019
- Food system overhaul needed to avoid ‘catastrophic’ climate breakdown — “Our Future in the Land” July 16, 2019
- Will Xi rule for life? | Inside Story July 16, 2019
- China Watch: ‘Never telling the whole truth’ | ABC News July 16, 2019
- How strong is the Chinese economy? July 16, 2019
- China Trash Ban Creates Crisis for US Recyclers July 16, 2019
- How China Controls the Internet July 16, 2019
- Why China Ended its One-Child Policy July 16, 2019
- Joe Pickard explains China’s ban on plastic waste imports July 16, 2019
- Why China doesn’t want your waste anymore – BBC News July 16, 2019
- China’s e-waste junk brings hazardous effects July 16, 2019
- How is the world dealing with the waste disposal epidemic? | Inside Story July 16, 2019
- Tropical Storm Barry Brings Major Flooding, Wrecks Homes & Cuts Power in Louisiana July 16, 2019
- Ecuador: Waorani Win Case to Protect Amazon Against Oil Exploitation July 16, 2019
- South Asian Floods Kill Dozens, Displace At Least 1 Million People July 16, 2019
- Trump Launches Racist Attack on Progressive Congresswomen of Color July 16, 2019
- The End of Ice: Bearing Witness and Finding Meaning in the Path of Climate Disruption: Dahr Jamail July 16, 2019
- “Fossil Fuel Stooges” Pence & Trump Deny Climate Crisis As Deadly Rains Slam Louisiana & South Asia July 16, 2019
- Noam Chomsky – History of US Rule in Latin America July 15, 2019
- Jim Collins on the name “Corteva” July 15, 2019
- What Makes a Farmer?: Highlights | Corteva Agriscience™ July 15, 2019
- What Makes a Farmer? A Farming Documentary | Corteva Agriscience™ July 15, 2019
- Who was the First Farmer? | Corteva Agriscience™ July 15, 2019
- Why China’s Chang’e 4 lunar mission is much more than a moon landing – Business Insider July 15, 2019
- China may launch its first mission to the Martian surface next year – Business Insider July 15, 2019
- What’s behind China’s space programme expansion – BBC News July 15, 2019
- France to create new space defence command in September – BBC News July 15, 2019
- Q&A With NASA Administrator Jim Bridenstine As The Agency Looks To Mars : NPR July 15, 2019
- James Hansen, Ph.D. – The Coming Climate Catastrophe and Our Last Chance to Save Humanity – Offstage July 15, 2019
- Edge of Extinction: Examples of Rapid Extinction July 14, 2019
- James Hansen’s 1988 testimony after 30 years. How did he do? July 14, 2019
- Remember When James Hansen was a Legitimate Scientist? July 14, 2019
- Peter Carter, M.D. – Unprecedented Crime: Climate Science Denial and Game Changers for Survival July 14, 2019
- Iran’s water crisis July 14, 2019
- Riot Police Clash with Protesters Inside Hong Kong Mall July 14, 2019
- The Great Climate Robbery: How the Food System Drives Climate Change and What We Can Do About It July 14, 2019
- Dust Bowls of Empire: Imperialism, Environmental Politics, and the Injustice of “Green” Capitalism (Yale Agrarian Studies Series): Hannah Holleman July 14, 2019
- When will Hong Kong protests end? | Inside Story July 14, 2019
- Are China-U.S. trade relations finally moving in a positive direction? July 14, 2019
- Flooding, landslides kill at least 43 in Nepal July 14, 2019
- How Steve Bannon sees the world July 14, 2019
- Why China is building islands in the South China Sea July 14, 2019
- Enterprises challenging China’s sovereignty to pay heavy price July 14, 2019
- At least 10 killed, over a million displaced in Indian flooding July 14, 2019
- Residents Left Stranded By Tropical Storm Barry’s Heavy Rains, Extreme Floods | NBC Nightly News July 14, 2019
- Parts of New York City go dark after power cut – BBC News July 14, 2019
- Causes and Effects of Climate Change | National Geographic July 14, 2019
- Why Congress Must Declare a Climate Emergency, Says Adam McKay | Opinions | NowThis July 14, 2019
- Covering Climate Change Effectively July 14, 2019
- David Wallace-Wells: ‘Why climate change is gravely worse than feared’ | ITV N ews July 14, 2019
Daily Archives: November 8, 2017
By Rebecca Morelle Science Correspondent, BBC News
- 24 October 2017
An artefact excavated from a shipwreck off the coast of Oman has been found to be the oldest known example of a type of navigational tool.
Marine archaeologists say the object is an astrolabe, an instrument once used by mariners to measure the altitude of the Sun during their voyages.
It is believed to date from between 1495 and 1500.
The item was recovered from a Portuguese explorer which sank during a storm in the Indian Ocean in 1503.
The boat was called the Esmeralda and was part of a fleet led by Portuguese explorer Vasco da Gama, the first person to sail directly from Europe to India.
David Mearns, from Blue Water Recovery, who led the excavation and is the author of The Shipwreck Hunter, told the BBC: “It’s a great privilege to find something so rare, something so historically important, something that will be studied by the archaeological community and fills in a gap.”
The astrolabe was discovered by Mr Mearns in 2014, and was one of nearly 3,000 artefacts recovered during a series of dives.
The bronze disc measures 17.5cm in diameter and is less than 2mm thick.
“It was like nothing else we had seen and I immediately knew it was something very important because you could see it had these two emblems on it,” said Mr Mearns.