Stingrays in the Amazon were stranded there by the Caribbean Sea
Technology

Stingrays in the Amazon were stranded there by the Caribbean Sea

Posted on Author admin Comment(0)

[ad_1]

By Jake Buehler

River stingrays

There are 38 species of river stingray

Fernando Marques

The web of waterways draining out of tropical regions of South America is home to dozens of species of freshwater stingrays. The fish evolved from seagoing ancestors, but exactly how they got inland has always been unclear. Now it seems they were carried by the Caribbean Sea reaching deep into the continent millions of years ago.

Central and South America are home to about 20 per cent of the world’s total fish species, says João Pedro Fontenelle at the University of Toronto in Canada.

Intrigued by what could be …

[ad_2]

Source link

Related Articles

Starcraft II
Technology

US Army tests AI chatbots as battle planners in a war game simulation

Posted on Author admin

[ad_1] A screenshot from Starcraft II Blizzard Games The US Army Research Laboratory is exploring whether OpenAI’s technology can improve battle planning – although only in the context of a military video game. The US military has already explored using AI technologies to analyse battlefield images and even identify targets for airstrikes – but it […]

Zero-covid countries need to adapt as delta variant surges
Technology

Zero-covid countries need to adapt as delta variant surges

Posted on Author admin

[ad_1] By Graham Lawton A man crosses an empty street during lockdown in Sydney, Australia Steven Saphore/Anadolu Agency via Getty Images Three countries that were leading the world in the fight against covid-19 now appear to be losing control, with cases rising in Australia, Japan and South Korea. Their new waves are being caused by […]

Most fuel-hungry SUVs in the UK are bought by people in cities
Technology

Most fuel-hungry SUVs in the UK are bought by people in cities

Posted on Author admin

[ad_1] By Adam Vaughan An SUV in London George Clerk/Getty Images SUVs in the UK are overwhelmingly bought by people in towns and cities rather than rural areas, with the London borough of Kensington and Chelsea the country’s Range Rover capital. Despite emitting 25 per cent more carbon dioxide on average than a medium-sized car, […]

Leave a Reply