قال الله تعالى

 {  إِنَّ اللَّــهَ لا يُغَيِّــرُ مَـا بِقَــوْمٍ حَتَّــى يُـغَيِّـــرُوا مَــا بِــأَنْــفُسِــــهِـمْ  }

سورة  الرعد  .  الآيـة   :   11

ahlaa

" ليست المشكلة أن نعلم المسلم عقيدة هو يملكها، و إنما المهم أن نرد إلي هذه العقيدة فاعليتها و قوتها الإيجابية و تأثيرها الإجتماعي و في كلمة واحدة : إن مشكلتنا ليست في أن نبرهن للمسلم علي وجود الله بقدر ما هي في أن نشعره بوجوده و نملأ به نفسه، بإعتباره مصدرا للطاقة. "
-  المفكر الجزائري المسلم الراحل الأستاذ مالك بن نبي رحمه الله  -

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science

الخميس, 28 كانون2/يناير 2021 10:09

Biden’s ambitious COVID plan: what scientists think

كتبه
marter testing, faster vaccinations and health equity are cornerstones of the 200-page COVID-19 strategy released by US President Joe Biden’s administration on 21 January, as the country surpassed 420,000 deaths due to the coronavirus. The plan pledges to “listen to science” — a shift from the approach of former president Donald Trump, who, at times, politicized scientific evidence and ignored public health recommendations. Many researchers posted messages on Twitter expressing relief that scientific evidence would play a central role in Biden’s plan. They also celebrated the existence of a coordinated national pandemic strategy, complaining that Trump’s failure to enact one impaired testing, tracing and other responses required to tame…
الجمعة, 18 كانون1/ديسمبر 2020 09:59

Shorter quarantines could actually help prevent COVID-19 outbreaks

كتبه
When photographer Justin Jin’s father experienced a medical emergency in late November at home in China, Jin, who lives in Belgium, immediately booked a flight to be with him. But the COVID-19 pandemic turned the usually straightforward trip into a two-and-a-half-week ordeal. In China, the virus is now well-controlled, so the government has set up a series of carefully choreographed precautionary steps to keep travelers from reintroducing the disease. Forty-eight hours before hopping on his flight, Jin had to take two types of COVID-19 tests—one for antibodies that involved a finger stick and a genetic test involving a nasal swab. The…
Brazil has changed. As well as the COVID-19 pandemic killing more than 170,000 of its citizens so far, 2020 has seen almost one-third of the Pantanal, the largest tropical wetland in the world, on fire. Four million hectares of forest, savannah and shrub-land (an area bigger than the US state of Maryland) have gone up in flames since January (see go.nature.com/2jtw6va). Almost all the Indigenous territories and conservation facilities were burnt, as was much private land. Conservation areas such as Encontro das Águas State Park have been devastated — it contained one of the largest populations of jaguars in the world.…
The Bioenergy Association of New Zealand welcomed the proposal from Government in its Action on Agricultural Emissions to provide credits for reductions of gross greenhouse gas emissions from farms.Brian Cox, executive officer of the Bioenergy Association said that “The Government proposals will open up opportunities for farmers to offset biological emissions from livestock. Currently, only the liability is counted and there is little recognition of the very significant carbon absorption that farmers already do. With a better regulatory framework, as is proposed by the Government, farmers will have recognition of the wide range of sustainable agricultural initiatives they have available.”“The wood from…
الخميس, 17 أيلول/سبتمبر 2020 17:24

The brain rhythms that detach us from reality

كتبه
The state of dissociation is commonly described as feeling detached from reality or having an ‘out of body’ experience. This altered state of consciousness is often reported by people who have psychiatric disorders arising from devastating trauma or abuse. It is also evoked by a class of anaesthetic drug, and can occur in epilepsy. The neurological basis of dissociation has been a mystery, but writing in Nature, Vesuna et al.1 describe a localized brain rhythm that underlies this state. Their findings will have far-reaching implications for neuroscience. The authors first recorded brain-wide neuronal activity in mice using a technique called widefield calcium imaging. They…
The accusation that the Chinese government delayed in letting the world know about the COVID-19 outbreak has become a political weapon in countries including the US, the UK and Canada. But China’s scientists have won international praise for hitting several key milestones in understanding the novel, fast-moving virus. Chinese leaders were seen as slow to react to the outbreak that began in the city of Wuhan, suppressing information and even punishing those who raised the alarm. “There was an early cover up in Wuhan, perhaps a few days to a week, before the threat was accepted. We will never know…
There was nowhere to land amid all the broken ice. On 6 February, three scientists were in a helicopter flying high above the ocean roughly 250 kilometres from the North Pole, and all they could see was jumbled masses of fractured sea ice. The ice was clearly unfit to land on. Just a week before, it had been smooth, thick and flat. They circled the region a few times and, when they spotted a seemingly solid section nearby, the pilot repeatedly tapped the helicopter against the ice to test whether the surface was stable. Then the scientists jumped out in…
Photos from the areas hardest hit by the novel coronavirus SARS-CoV-2 tell a story of disinfection: Trucks spraying streets and a phalanx of sanitation workers wearing backpack tanks fogging sidewalks, parks, and plazas in China, South Korea, Italy, and elsewhere. Countless recommendations admonish us to wash our hands and disinfect often-touched surfaces in our homes. But what is the most effective way to prevent exposure to the virus? Like other coronaviruses, severe acute respiratory syndrome coronavirus 2, which causes COVID-19, is thought to spread most commonly through invisible respiratory droplets sent into the air when an infected person coughs or…
السبت, 07 آذار/مارس 2020 15:50

COVID-19 and the anti-lessons of history

كتبه
As the outbreak of coronavirus disease 2019 (COVID-19) in China's Hubei province continues and new cases of the disease increase globally, 1  there is pressure on historians to show the value of history for policy. How can the past assist in the real-time management of the crisis? What insights can be gleaned from the ongoing epidemic for future disease preparedness and prevention? Lurking in the background of these interrogatives is a more or less explicit accusation: why haven't past lessons been learned? The gist of some commentaries seems to be: “there is almost nothing surprising about this pandemic”. 2  The…
الخميس, 25 نيسان/أبريل 2019 09:53

8 Health Benefits of Fasting, Backed by Science

كتبه
Despite its recent surge in popularity, fasting is a practice that dates back centuries and plays a central role in many cultures and religions. Defined as the abstinence from all or some foods or drinks for a set period of time, there are many different ways of fasting. In general, most types of fasts are performed over 24–72 hours. Intermittent fasting, on the other hand, involves cycling between periods of eating and fasting, ranging from a few hours to a few days at a time. Fasting has been shown to have many health benefits, from increased weight loss to better…
In a letter to the journal Nature, 18 scientists and ethicists from seven countries called for a global moratorium on the type of gene editing that can result in genetically altered babies. The letter was prompted by a 2018 announcement by a Chinese scientist declaring the birth of the world’s first gene-edited twin babies. “The 18 signatories of this call include scientists and ethicists who are citizens of 7 countries. Many of us have been involved in the gene-editing field by developing and applying the technology, organizing and speaking at international summits, serving on national advisory committees and studying the ethical…
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