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Negative CO2 Cement

Remember the rocks that absorb CO2? Well, today the Guardian reports that British engineering firm Novacem has developed a new cement that does the same-and produces far less CO2 in production than traditional cement. If this technology can find scalability it would be a truly huge innovation, as cement..

 Casey Caplowe
01.02.09

Remember the rocks that absorb CO2?Well, today the Guardian reports that British engineering firm Novacem has developed a new cement that does the same-and produces far less CO2 in production than traditional cement. If this technology can find scalability it would be a truly huge innovation, as cement making is presently one of the single largest sources of global carbon-dioxide emissions (the Guardian cites it as 5% of of all CO2-more than the entire aviation industry).Here's the Guardian's simple description of how Novacem's new concrete is different from our regular concrete:

Standard cement, also known as Portland cement, is made by heating limestone or clay to around 1,500C. The processing of the ingredients releases 0.8 tonnes of CO2 per tonne of cement. When it is eventually mixed with water for use in a building, each tonne of cement can absorb up to 0.4 tonnes of CO2, but that still leaves an overall carbon footprint per tonne of 0.4 tonnes.Novacem's cement, which has a patent pending on it, uses magnesium silicates which emit no CO2 when heated. Its production process also runs at much lower temperatures - around 650C. This leads to total CO2 emissions of up to 0.5 tonnes of CO2 per tonne of cement produced. But the Novacem cement formula absorb far more CO2 as it hardens - about 1.1 tonnes. So the overall carbon footprint is negative - i.e. the cement removes 0.6 tonnes of CO2 per tonne used.Click here for the full article.(Image above shows The Portland Cement Factory in Aalborg, Denmark)
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Articles

Though we still have a ways to go, humanity has made big leaps toward gender equality

UN Women/Pornvit Visitoran

This article was produced in partnership with the United Nations to launch the biggest-ever global conversation on the role of cooperation in building the future we want.

When half of the world's population doesn't share the same opportunity or rights as the other half, the whole world suffers. Like a bird whose wings require equal strength to fly, humanity will never soar to its full potential until we achieve gender equality.

That's why the United Nations made one of its Sustainable Development Goals to "Achieve gender equality and empower all women and girls." That goal includes providing women and girls equal access to education and health care, as well as addressing gender-based discrimination and violence against women and girls.

While there is still much work to be done, history shows us that we are capable of making big leaps forward on this issue. Check out some of the milestones humanity has already reached on the path to true equality.

Historic Leaps Toward Gender Equality

1848 The Seneca Falls Convention in New York, organized by Elizabeth Lady Stanton and Lucretia Mott, is the first U.S. women's convention to discuss the oppression of women in sociopolitical, economic, and religious life.

1893 New Zealand becomes the first self-governing nation to grant national voting rights to women.

1903 Marie Curie becomes the first woman to win a Nobel Prize. She is also the only woman to win multiple Nobel Prizes, for Physics in 1903 and Chemistry in 1911.

1920 The 19th Amendment is passed in the U.S. giving women the right to vote in all 50 U.S. states.

1973 The U.S. Open becomes the first major sports tournament of its kind to offer equal pay to women, after tennis star Billie Jean King threatened to boycott.

1975 The first World Conference on Women is held in Mexico, where a 10-year World Plan of Action for the Advancement of Women is formed. The first International Women's Day is commemorated by the UN in the same year.

1979 The UN General Assembly adopts the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW), also known as the "Women's Bill of Rights." It is the most comprehensive international document protecting the rights of women, and the second most ratified UN human rights treaty after the Convention on the Rights of the Child.

1980 Vigdis Finnbogadottir of Iceland becomes the first woman to be elected head of state in a national election.

1993 The UN General Assembly adopts the Declaration on the Elimination of Violence against Women, the first international instrument to explicitly define forms of violence against women and lay out a framework for global action.

2010 The UN General Assembly creates the United Nations Entity for Gender Equality and the Empowerment of Women (UN Women) to speed progress on meeting the needs of women and girls around the world.

2018 The UN and European Union join forces on the Spotlight Initiative, a global, multi-year initiative focused on eliminating all forms of violence against women and girls.

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As the UN celebrates its 75th anniversary, it is redoubling its commitment to reach all 17 Sustainable Development Goals, including gender equality. But it will take action and effort from everyone to ensure that women and girls are free from discrimination and violence. Learn more about what is being done to address gender equality and see how you can get involved here.

And join the global conversation about the role of international cooperation in building the future by taking the UN75 survey here.

Let's make sure we all have a say in the future we want to see.

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Communities

Judge has scathing words for the Allentown police after their 'shameful' attack on an innocent man

via WFMZ / YouTube

John Perez was acquitted on Friday, February 21, for charges stemming from an altercation with Allentown, Pennsylvania police that was caught on video.

Footage from September 2018 shows an officer pushing Perez to the ground. After Perez got to his feet, multiple officers kicked and punched him in an attempt to get him back on the ground.

Perez claims he was responding to insults hurled at him by the officers. The police say that Perez was picking a fight. The altercation left Perez with a broken nose, scrapes, swelling, and bruises from his hips to his shoulder.

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Communities

BJ Novak provided proof that Cadbury eggs were shrinking in size back in 2007

According to Investopedia, skrinkflation is "is the practice of reducing the size of a product while maintaining its sticker price. Raising the price per given amount is a strategy employed by companies, mainly in the food and beverage industries, to stealthily boost profit margins."

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Culture