Notícias · Recifes

To ancient astronomers, Theta Eridani was brighter for 1,000 years—now we know why

There's a bit of a historical mystery surrounding the star Theta Eridani. Ptolemy in the second century A.D. and al-Sufi in A.D. 964 both recorded Theta Eridani as one of the 13 brightest stars in the sky. Hipparchus may have said the same. But there's a problem. For it to be one

Admin Recifes 15/07/2026 4

Boi gordo: veja como os preços da arroba fecharam em 9 estados

Foto gerada por IAPressão de baixa continua, mesmo com escalas de abate encurtadas; acompanhe as cotações pelo Indicador do Boi Gordo Datagro O post Boi gordo: veja como os preços da arroba fecharam em 9 estados apareceu primeiro em Canal Rural.

Admin Recifes 15/07/2026 4

New sensors capture warning signs before fish deaths in Lake Victoria

Researchers from King's College London recorded the warning signs of a major low-oxygen event in Lake Victoria just hours before fish deaths were reported by local communities, demonstrating why earlier warning systems are urgently needed.

Admin Recifes 15/07/2026 3

Dark energy flips its sign, but the Hubble tension refuses to budge

For nearly a century, astronomers have known that the universe is expanding. In the late 1990s, two independent teams, the Supernova Cosmology Project, led by Saul Perlmutter, and the High-Z Supernova Search Team, led by Brian Schmidt and Adam Riess, discovered something strange:

Admin Recifes 15/07/2026 4

Collective agreements are least common where workers need them most

Workers earning the lowest wages are the least likely to be covered by collective agreements in Germany, despite being the group for whom these protections are arguably most important. In 2021, only 34% of workers in the lowest wage decile were covered by collective agreements, c

Admin Recifes 15/07/2026 4

Europe just unveiled a new rival to SpaceX’s Starship

A detailed independent study found that SpaceX's Starship is every bit as revolutionary as expected, while revealing both its impressive capabilities and its biggest remaining hurdles. It also introduces an ambitious European rocket concept that could offer a very different route

Admin Recifes 15/07/2026 3

‘Children were calling for their mummies’: UK pupils struggle in 40C-plus classrooms

Teachers call for schools to be urgently adapted for hot weather amid reports of nausea, fainting and heatstrokeThe extreme heat that has hit the UK twice in the past few weeks has left teachers struggling to cope as temperatures in some classrooms climb above 40C, with pupils an

Admin Recifes 15/07/2026 2

Country diary: Harvest time has arrived – and it’s three weeks earlier than 20 years ago |

Brigg, Lincolnshire: It’ll take six weeks to cut it all, starting with barley and likely ending with beans. Thank goodness the combine has air-conditioningThe crops have managed to survive winter flooding (almost) and two heatwaves, but another hot spell of weather is on the way

Admin Recifes 15/07/2026 2

Japan's space agency conducts first test flight for experimental reusable rocket

Japan's experimental reusable rocket took off and safely landed in a first test flight Saturday as the country seeks to achieve the technology key to cut launch costs and compete in the global space market dominated by SpaceX.

Admin Recifes 15/07/2026 2

‘Spermageddon’: is the world facing a male reproductive crisis?

Reports of falling sperm counts and testosterone levels have fuelled fears over chemicals, pollution and modern lifestyles. But how much do scientists agree on what is affecting male fertility?The world is unwittingly walking into a male reproductive crisis, scientists warned thi

Admin Recifes 15/07/2026 4

Second pregnancy changes the brain in surprising new ways

Researchers found that every pregnancy rewires the brain in its own way, with a second pregnancy bringing a different pattern of changes than the first. The discoveries could lead to better ways to recognize and treat maternal mental health challenges, including peripartum depres

Admin Recifes 15/07/2026 4

Thousands shelter in Taiwan as typhoon lashes Japan islands

More than 14,000 people in Taiwan have fled their homes, and many shops remain closed, as a typhoon pounding Japan's remote southwestern islands swept toward China on Saturday.

Admin Recifes 15/07/2026 3

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