📱 حمّل تطبيق خبر الآن! App Store Khabr Live
🕐 --:--
-- --
عاجل
⚡ عاجل: كريستيانو رونالدو يُتوّج كأفضل لاعب كرة قدم في العالم ⚡ أخبار عاجلة تتابعونها لحظة بلحظة على خبر ⚡ تابعوا آخر المستجدات والأحداث من حول العالم
⌘K
AI مباشر | -- مشاهد مباشر
1,081,774 مقال 401 مصدر نشط 228 قناة مباشرة 4,037 خبر اليوم
آخر تحديث: منذ 0 ثانية

علوم

3418 مقال

How submarines launch ballistic missiles without blowing themselves up

Submarine-launched ballistic missiles utilize an innovative 'cold launch' method, setting a new global standard for safety. This technique propels missiles via high-pressure gas, preventing the ignition of rocket engines inside the submarine. Originating from Cold War developments, it enables launches from underwater, significantly bolstering nuclear deterrence and the safety of vessels and crews. Modern SLBMs, like India's K-4, integrate this essential technology.

Times of India منذ شهر

Meet Avi Loeb: Harvard scientist picked to lead White House UFO panel

The question of whether humanity is alone in the universe has fascinated scientists for generations, but few have pursued an answer as publicly or as controversially as Harvard astrophysicist Avi Loeb. While most researchers argue that extraordinary claims require extraordinary evidence, Loeb believes advanced alien civilisations may already have left technological traces in our cosmic neighbourhood and that scientists should investigate those possibilities with an open mind rather than dismiss...

Times of India منذ شهر

EU-approved pesticide found to have potential effects on brain development

New study on fluazinam’s neurotoxicity comes up with different findings from earlier report based on manufacturer’s dataResearchers who re-ran a crucial fungicide study on neurotoxicity have come up with significantly different findings, and campaigners argue that the substance should now be withdrawn from the market.In 2005, a study conducted by Huntingdon Life Sciences on behalf of ISK, the manufacturer of fluazinam, on the development of neurotoxicity of fluazinam in pregnant rats concluded t...

The Guardian منذ شهر

World’s oceans break June heat record: Monitor

Oceans worldwide recorded their hottest June ever, with global average sea surface temperatures reaching 20.98°C. Scientists warn that the developing El Nino phenomenon, coupled with ongoing climate change, could push ocean and atmospheric heat to new peaks in the coming months and into next year. This alarming trend highlights the escalating impact of global warming on marine environments.

Times of India منذ شهر

Earthquake of magnitude 4.7 strikes Tajikistan; no immediate reports of damage

Tajikistan experienced a 4.7 magnitude earthquake early Thursday morning, with tremors felt at a depth of 122 km. This follows a 4.0 magnitude quake on June 21. The nation, known for its mountainous terrain, is highly susceptible to seismic activity. Climate change is exacerbating existing vulnerabilities, posing increased risks to infrastructure and remote communities.

Times of India منذ شهر

Scientists build from scratch cells that can grow, feed & reproduce

Marking a breakthrough in biological engineering, researchers claim to have created the world’s first synthetic cells that can feed, grow and replicate like a natural cell, taking a big step towards the holy grail of making a living organism out of non-living components.

Times of India منذ شهر

Scientists fear seabird die-off as El Niño looms: ‘We don’t know how bad this is will get’

Many seabirds are starving to death as a marine heat wave lingers off California and fish seek deeper, cooler watersWithin minutes of walking on a San Diego beach, marine ornithologist Tammy Russell found the feathered carcasses – one after another.Some were mixed in with washed up kelp. Others were under rocks. Continue reading...

The Guardian World منذ شهر

The Harvard astronomer dubbed Trump’s chief alien hunter starts by assuming UFOs human-made

Avi Loeb’s White House panel has asked the Pentagon for videos and files on unexplained aerial sightingsA controversial Harvard University cosmologist who has suggested alien lifeforms could be sailing into the solar system disguised as meteors is leading the Trump administration’s secretive new scientific advisory panel on security risks posed by UFOs.Avi Loeb and his hand-picked committee have already begun looking into the origins of mysterious flying craft, now known as unidentified aerial p...

The Guardian World منذ شهر

Scientists create 'life': All about the SpudCell - why it matters & where it falls short

Scientists have engineered 'SpudCell,' a lab-made system from chemicals that mimics life's core functions like growth and division. While not fully alive due to reliance on external components, this breakthrough offers a simplified model to understand essential life processes. Researchers aim to enhance its self-sufficiency, paving the way for custom biological machines and deeper insights into fundamental biology.

Times of India منذ شهر

Secretive Gaza meetings in Cyprus as plan to isolate Hamas gathers pace

Board of Peace talks on Gaza's post-war future face funding crises and warnings of a colonial occupation.

Al Jazeera English منذ شهر

Trump takes first flight on new Qatar-gifted Air Force One

US President Donald Trump took his maiden voyage aboard the new Air Force One on Wednesday.

Al Jazeera English منذ شهر

‘Beautiful blobs’: synthetic life a step closer as scientists make cells using lab-made DNA

Tiny, quivering spheres designed to feed and multiply raise prospect of artificial organisms to make drugs, food and fuelResearchers claim they are closer to creating life from scratch after building tiny, quivering blobs that use lab-made DNA to feed, grow and multiply in a dish.The synthetic cells were made from chemical compounds and are believed to be the first to demonstrate the complete cell cycle of growth, genetic replication and splitting to produce the next generation. Continue reading...

The Guardian World منذ شهر

Mystery identity of 'Green Boots' climber - who became a macabre landmark frozen in ice after dying on Everest - is finally solved after DNA test

Mystery identity of 'Green Boots' climber - who became a macabre landmark frozen in ice after dying on Everest - is finally solved after DNA testSee more Daily Mail on Google - save us as a Preferred SourceBy OLIVIA ALLHUSEN, FOREIGN NEWS REPORTER Published: 08:58, 1 July 2026 | Updated: 08:58, 1 July 2026 e-mail View comments

Daily Mail منذ شهر

‘Happy vowel’ is a key indicator of social class in Manchester accents, study finds

Final vowel in words such as happy, baby and chilly varies clearly by social class across the city Pronunciation of the “happy vowel” is one of the key indicators of social class in Mancunian accents, researchers have found.A sociolinguistic study, led by Lancaster University, found that the final vowel in words such as happy, baby, chilly and city – known to linguists as “the happy vowel” – varies clearly by social class across Manchester. Continue reading...

The Guardian منذ شهر

Specieswatch: How heatwaves play havoc with bees’ fertility

Study reveals extreme heat causes sharp drop with knock-on effect for pollination of food crops in following yearsWe know heatwaves have serious health consequences for humans, but what about other species? A study has shown they severely diminish bees’ fertility, with significant implications for the pollination of food crops in the following years.Prof James Gilbert of the University of Hull his and colleagues simulated a three-day UK heatwave in the lab and measured its effect on solitary red...

The Guardian World منذ شهر

World’s oceans experience hottest June ever, scientists say more heat ahead

European Union monitors say the first half of 2026 was 'marked by sustained and exceptional ocean warmth'.

Al Jazeera English منذ شهر

Japan faces 1,500 earthquakes a year. Why its cities rarely collapse

Japan experiences around 1,500 earthquakes that are strong enough to be felt every year, a staggering figure that would seem disastrous for most countries. Yet, despite sitting at one of the most seismically active places on Earth, Japan's cities rarely witness widespread building collapses after major earthquakes.

Times of India منذ شهر

NASA barrels ahead with moon base plans, doling out nearly $600 million in new contracts

SpaceNASA barrels ahead with moon base plans, doling out nearly $600 million in new contractsThe announcement is the latest in a stream of funding contracts NASA has awarded private companies in its effort to establish a permanent presence on the moon.Listen to this article with a free profile00:0000:00NASA Administrator Jared Isaacman speaks to the media after the Artemis II crew arrives at Kennedy Space Center in Cape Canaveral, Fla., on March 27.Craig Bailey / USA Today Network via Reuters Co...

NBC News منذ شهر

Renaissance artist uncovered hidden science breakthrough 400 YEARS before today's researchers

A Renaissance artist knew about - and painted - a modern scientific breakthrough some 400 years before today's researchers, a study has found. One of Jan Brueghel the Elder's 17th-century works shows a ravenous bat eating a bird, a behaviour which has only been observed in recent years.Research published in the Proceedings of the National Academy of Sciences (PNAS) titled "Natural history on canvas: Brueghel knew about bird-eating noctule bats," examines an oil-on-copper work called "Air" comple...

GB News منذ شهر

‘But we’re just 1% of emissions’: do smaller countries’ climate efforts matter?

Past and present leaders of wealthy nations such as UK and Germany have argued their actions are insignificantOn first hearing, it is a position that sounds reasonable. “When our share of global emissions is less than 1%,” Rishi Sunak argued when he was the UK prime minister in 2023, “how can it be right that British citizens are now being told to sacrifice even more than others?”Sunak is not the only world leader to have cited such figures while delaying cuts to pollution. In 2019, Scott Morris...

The Guardian World منذ شهر
AI
يا هلا! اسألني أي شي 🎤
🔍
FREE Free 1GB Internet + Free International Calls

$1 trial — eSIM in 190+ countries — No roaming charges

Download Free