Keratin, a protein found in hair, skin and wool has been developed into a dental treatment that works to repair damaged tooth enamel. Researchers at King’s College London say it could halt early-stage decay and reduce sensitivity.

London

Researchers at King's College London have developed a dental treatment using keratin, a protein found in hair, skin, and wool, to help repair damaged tooth enamel. The treatment works by forming a protective coating that mimics natural enamel and can halt early-stage decay, reduce sensitivity, and reinforce enamel structure. Unlike conventional dental resins, keratin can be sustainably sourced from biological waste such as wool or human hair. The technology is still undergoing clinical trials, but researchers are optimistic that keratin-based dental products like toothpastes and gels could become available to consumers within a few years. Oral diseases remain a significant global health challenge, affecting billions of people worldwide.

How toothpaste made from hair could help repair teeth

Researchers in London have developed a dental treatment using keratin, a protein found in hair, skin and wool that they say can repair damaged tooth enamel. Currently enamel, once it's gone, it cannot regenerate itself. It's gone forever. So we need to find solutions. Dr Sharif al-Shikawi from King's College London is senior author of a study that suggests keratin can interact with saliva to form a protective coating mimicking natural tooth enamel. Enamel cannot regenerate once eroded by acidic foods, poor hygiene or ageing. We need to rebuild what you've lost and with keratin we've managed to infiltrate early decay and protect the enamel from its loss and rebuilding what you lose on a daily basis. He added the keratin coating can halt early stage decay, reduce sensitivity and reinforce enamel structure. Unlike conventional dental resins, it can be sustainably sourced from biological waste like wool or human hair. Keratin is present in multiple sources including sheep wool, human hair, feathers, nails and hooves. This material is a waste basically. So how can we get the core of that material which is keratin and try to repurpose it in a way that can be useful for our population. The technology requires further clinical trials to ensure long term efficacy and scalability. Al-Shikawi says the research team is in discussions with potential dental industry partners and he sees a clear path to bringing the project to market. He says keratin based dental products like toothpastes and gels could become available to consumers within two to three years. I believe, I have the dream that digestive medicine doesn't have to be expensive in order for people to access it. Globally oral diseases pose a major health challenge. The World Health Organization estimates oral diseases affect about 3.5 billion people causing pain, discomfort, disfigurement and even death.

Air Canada has reached a tentative agreement with the Canada Industrial Relations Board (CIRB), ending the strike that began over the weekend involving 10,000 members and disrupted travel for more than 100,000 travelers per day.

Toronto

Air Canada reaches tentative agreement with flight attendant union

Forecasters are giving urgent warnings to millions of people who live along the East Coast as Hurricane Erin churns in the Atlantic. The storm will not make direct landfall but is expected to bring dangerous rip currents.

East Coast of the United States

Hurricane Erin to bring dangerous rip currents to U.S. East Coast

Jasveen Sangha, a Los Angeles woman known as the "Ketamine Queen," has agreed to plead guilty to federal charges in connection with the death of actor Matthew Perry. Sangha could face up to 45 years in prison.

Los Angeles

"Ketamine Queen" to plead guilty in Matthew Perry's death

European leaders who converged on the White House for talks on the Russia-Ukraine war demonstrated a united front regarding Ukraine's security on Monday, underscoring the issue as pivotal for the entire continent, not just Ukraine.

Washington

Ukraine Invasion

EU leaders show cautious optimism following Zelenskyy, Trump talks

As Hamas reportedly agreed to some ceasefire terms that would include the return of more hostages, Israeli Prime Minister Benjamin Netanyahu ordered troops to take more of Gaza.

Jerusalem

Middle East Conflict

Israel digs in on Gaza takeover as Hamas softens on ceasefire

President Donald Trump said that the United States would help Europe in providing security for Ukraine as part of any deal to end Russia's war in Ukraine.

Trump tells Zelenskyy U.S. would help with security in a peace deal

Bolivia's presidential vote headed to an unprecedented runoff after elections Sunday that ended more than two decades of left-wing dominance in the Andean nation but signaled voters' trepidation about a major lurch to the right.

La Paz

Bolivia heads to runoff after historic defeat for the left

All Air Canada planes were grounded on Monday (August 18) after its 10,000 flight attendants refused a return-to-work mandate from the Canadian government.

Air Canada delays plans to resume operations

Ukrainian President Volodymyr Zelenskyy arrived at the White House Monday (August 18) for his meeting with President Donald Trump and other European leaders about Russia's war in Ukraine. CBS News White House reporter Taurean Small has more.

Trump meeting with Zelenskiy, European leaders at White House

Hamas on Monday informed mediators that it had accepted a ceasefire deal proposal submitted to it the day before, according to international and Israeli outlets.

Reports: Hamas accepts latest Gaza ceasefire proposal

Hurricane Erin will bring dangerously rough surf to parts of the U.S. East Coast. Over the weekend, Erin's outer bands lashed Puerto Rico with up to 7 inches of rain and flooding parts of the island.

Erin expected to bring dangerous conditions to U.S. East Coast

Ahead of his Monday meeting with President Trump, Ukrainian President Volodymry Zelenksyy says his country will not give up any territory to Russia, even as the White House insists potential land swaps will be necessary. Willie James Inman reports.

Kyiv

Ahead of Trump meeting, Zelenskyy says won't give territory to Russia

Thousands of Israeli protesters demanded a deal to secure the release of hostages still held by Hamas in one of the biggest demonstrations since the war in Gaza began. Debora Patta reports.

Thousands of Israelis protest in Gaza, call for end to fighting

Ukrainian President Volodymyr Zelenskyy flies to Washington on Monday under heavy U.S. pressure to agree to a swift end to Russia's war in his country, but determined to defend Kyiv's interests — without sparking a second Oval Office dust-up with Donald Trump.

Zelenskyy, European allies to meet with Trump to discuss peace

European leaders voiced strong support for Ukraine ahead of a Washington summit with U.S President Donald Trump. They emphasized unity, territorial integrity and security guarantees as essential to any peace deal.

Paris

European leaders stress unity with Ukraine ahead of peace talks

International condemnation and pressure from allies have done nothing to stop Israel's plan to displace the people of northern Gaza. Israel on Saturday (August 16) said it is preparing to move Palestinians from combat zones to southern Gaza.

Israeli military prepares to move Palestinians to southern Gaza

Thousands of people took to the streets on Sunday in a nationwide strike amid fears further fighting could endanger the 50 hostages believed to still be in Gaza.

Tel Aviv-Yafo

Dozens of Israelis arrested in protest to demand end to Gaza war

Russia continues to target Ukrainian cities firing hundreds of missiles and projectiles daily despite ongoing peace efforts, led by the United States. Ukrainian officials say their unwillingness to dial back their offensive reflects their lack of sincere interest in peace.

Five killed as Russia continues to pummel Ukrainian cities

U.S. President Donald Trump said that Ukraine should make a deal to end the war with Russia because "Russia is a very big power, and they're not," after a summit where Vladimir Putin was reported to have demanded more Ukrainian land.

Anchorage

Trump told Zelenskiy that Putin wants more of Ukraine, source says

Efforts by Texas Republicans to redraw the state's congressional maps got new pushback from protesters at rallies across the country Saturday. Nearly 280 events took place in 34 states, according to organizers.

"Fight the Trump Takeover" protests held across U.S.

West Virginia's governor says he will send up to 400 National Guard troops to the nation's capital at President Trump's request. They'll join other National Guard troops and federal agents already deployed with local police on the streets of Washington, D.C.

More troops arrive in D.C. at Trump's request

President Trump reversed course Saturday, saying he is no longer seeking an urgent ceasefire in Ukraine, but now agrees with Russian President Vladimir Putin that pursuing a peace deal is the best way to end the war.

Trump sides with Putin, preferring peace over ceasefire

Russian President Vladimir Putin described his meeting with President Trump as "frank, substantive and bringing us closer to making the necessary decisions." But the Alaska summit couldn't have been more far removed from the battlefields of Ukraine.

War-weary Ukrainians desperate for a ceasefire

In Ukraine, many do not believe Russia's president Vladimir Putin actually wants a ceasefire deal. They say Trump should stop making concessions to the Kremlin and for U.S President Donald Trump to demand an end to Russia aggression.

Ukrainians sceptical of Vladimir Putin’s intention

Being a Category 1 hurricane, Erin underwent a 'rapid intensification' which helped the storm to grow and strengthen to a powerful Category 5. Hurricane Erin won't make a direct hit on the U.S., but it will produce dangerous surf conditions for the entire East Coast.

San Juan

Hurricane Erin 'rapidly intensifies' to a Category 5

The Washington, D.C., police chief will remain in command of the local force following a settlement with the Trump administration over the federal takeover, but they are required to cooperate with the White House's immigration policy.

D.C. police retain some control after deal with Justice Department

The Atlantic Ocean's first hurricane of the season, Erin, has continued to gain strength and currently sits off the coast of Anguilla.

Hurricane Erin strengthens in the Atlantic

President Trump and Russian President Vladimir Putin met on Friday in Alaska to discuss the war in Ukraine. The leaders did not announce a peace deal, but Trump is set to meet with Ukrainian President Volodymyr Zelenskyy on Monday.

Trump, Putin meeting in Alaska ends without a ceasefire deal

Talks between the U.S. President and Russian President Vladimir Putin concluded without an agreement on ending the war in Ukraine, despite being widely anticipated as a possible turning point.

Zelenskyy set to meet U.S. president Monday after no ceasefire deal

For the first time in a decade, Vladimir Putin was on U.S. soil for a much-anticipated meeting with Donald Trump. The U.S. and Russian presidents were supposed to discuss a deal to put an end to Moscow’s war against Ukraine, but they did not mention a ceasefire after the talks.

Breakdown