Australian researchers are turning used coffee grounds into a material that can be added to concrete to make it stronger and more sustainable, potentially lowering greenhouse gas emissions.

Melbourne

Extreme weather events are occurring more frequently amid rising sea-levels and increasing temperatures.

Climate Crisis

Australian researchers are transforming used coffee grounds into a sustainable material that can be added to concrete. This innovative process, developed by RMIT University, involves heating the coffee grounds to over 650 degrees Fahrenheit in an oxygen-free chamber to create a substance called biochar. Biochar can replace up to 15% of sand used in concrete, making it 30% stronger and potentially reducing the use of cement, a highly carbon-intensive material.

Lead researcher Rajiv Royshand estimates that 100% of Australia's coffee waste could be recycled into concrete applications. Coffee production is responsible for around 7% of the world's CO2 emissions, according to the United Nations. The extraction of sand and gravel, which is used extensively in concrete, is often environmentally destructive and the UN reports it is in increasingly short supply.

A test footpath has already been constructed using the coffee-enhanced concrete. The RMIT team is collaborating with several construction and concrete companies and is forming their own biochar company. They are also in talks with large coffee chains like Starbucks to source coffee grounds. Local coffee shop owner Tony Roussos supports the initiative, noting that it could bring down the cost of concrete while benefiting the environment.

Royshand envisions the technology being applied to more than just coffee waste. He anticipates that 60 to 70% of organic waste currently ending up in landfills could be diverted into concrete applications.



Morning coffees make greener concrete in Australia

Your morning cup of coffee could help the planet. That's the promise of one Australian university that's transforming used coffee grounds into more sustainable concrete. They say the process could potentially lower greenhouse gas emissions. The researchers at RMIT University are heating the coffee grounds to over 650 degrees Fahrenheit in an oxygen-free chamber to create a substance called biochar. They claim biochar can replace up to 15% of the sand used in concrete and make it 30% stronger. We can leverage that to even reduce the cement content, which is a highly carbon-intensive material. Rajiv Royshand is the lead researcher. We anticipate that the whole 100% of coffee waste in Australia can be recycled into concrete applications. Coffee production is responsible for around 7% of the world's CO2 emissions, according to the United Nations. Over 55 billion tons of sand and gravel are dug up each year, mostly for use in concrete. Its extraction is often environmentally destructive, and the UN says it's in increasingly short supply. This footpath was successfully made with coffee concrete. The researchers here are working with several construction and concrete companies and forming their own biochar company. They're also in talks with Starbucks to take its coffee grounds. Local coffee shop owner Tony Roussos says he would get in on the action, too. Fantastic. It's a very innovative idea, bring the cost of concrete down, and the materials. Obviously, there's a benefit to the environment for not using harsh chemicals and replacing it with coffee grounds as a natural product, easy to access, a lot of cafes could sell their coffee grounds, so in the end, it's a great solution. Royshand says that eventually, the technology could be used for more than just coffee. In terms of the real world, our focus is that we try to transform all of the organic waste that is ending up in landfills for this positive application in concrete. We anticipate that about 60 to 70% we can divert from landfills into concrete applications.

It was not clear if Hamas’ statement meant it had accepted the proposal from US President Donald Trump for a 60-day ceasefire.

Jerusalem

Hamas says it is  'positive' about latest ceasefire proposal

President Trump brought pomp and circumstance to his signing of the "big, beautiful bill" on Friday, with an Independence Day ceremony at the White House that included a B-2 bomber flyover.

Washington

Global Tariffs

Trump signs "big, beautiful bill" as tariff deadline looms

Heavy rainfall in central Texas caused the Guadalupe River to overflow and unleash a torrent of water. The bodies of at least 13 children and adults have been recovered and more than 20 girls are missing from a sleepaway camp.

Kerr County

Floods kill at least 13 in Texas, over 20 missing from summer camp

The talk comes a day after President Donald Trump and Russian President Vladimir Putin discussed Ukraine, Iran and other issues in a call the Kremlin described as "frank and constructive."

Kyiv

Ukraine Invasion

Zelenskyy, Trump agree on joint defense efforts in phone call

Russia pummeled Kyiv with the largest drone attack of the war, injuring at least 23 people and damaging buildings across the capital only hours after U.S. President Donald Trump spoke with Russia's Vladimir Putin, officials said.

Russia hits Kyiv with largest drone attack after Trump-Putin call

U.S. President Donald Trump marked the passage of the new spending bill, which includes changes to food assistance, student loan programs, and clean energy credits. Robert Costa joins "CBS Mornings" to break down what's in the legislation.

Trump set to sign "big, beautiful bill"

More than 80 Palestinians were killed in Gaza on Thursday (July 3), according to health officials, as Israel intensified its strikes, hitting a school-turned-displacement facility. CNN’s Paula Hancocks looks at the damage and humanitarian toll.

More than 80 people killed in Gaza in one day

Ukrainian President Volodymyr Zelenskyy said Kyiv will do "anything" to advance EU accession talks. Zelenskyy spoke alongside Danish Prime Minister Mette Frederiksen, President of the European Council António Costa and President of the European Commission Ursula von der Leyen.

Ukraine will do 'anything' to advance EU accession talks: Zelenskyy

President Donald Trump said Washington will start sending letters to countries on Friday specifying what tariff rates they will face on imports to the United States, a clear shift from earlier pledges to strike scores of individual deals.

Trump: Letters telling countries their tariff rate going out Friday

Indonesian rescuers on Thursday (July 3) temporarily halted a search for 30 people still missing after a ferry carrying 65 people sank near the island of Bali with the loss of six lives, the national search and rescue agency said.

Gilimanuk

Indonesia suspends search for 30 missing after ferry sinks near Bali

After marathon debate sessions in the Senate and House, President Donald Trump’s budget bill passed in the House. Republicans secured the biggest win of Trump’s presidency.

Trump’s landmark ‘big, beautiful bill’ narrowly passes U.S. House

Florida says the first group of migrant detainees have arrived at the new immigration detention center known as "Alligator Alcatraz." CBS News correspondent Shanelle Kaul has more.

Ochopee

First group of detainees arrive at "Alligator Alcatraz," Florida says

U.S. President Donald Trump said Thursday (July 3) that he spoke with Russian President Vladimir Putin and that he plans to hold a call with Ukrainian President Volodymyr Zelenskyy. CBS News White House reporter Willie James Inman has more.

Trump speaks with Putin, plans call with Zelenskyy

CNN’s Priscilla Alvarez reports on a lawsuit from lawyers for Kilmar Abrego Garcia alleging he suffered “torture and mistreatment” after he was wrongfully deported and held in El Salvador’s notorious mega prison.

Tecoluca

Kilmar Abrego Garcia claims he was tortured in El Salvadoran prison

The Kremlin welcomed the development, with spokesman Dmitry Peskov claiming it proves Western arsenals are being depleted and predicting that less aid will hasten the end of the conflict.

U.S. pauses military aid to Ukraine over depleted weapons stockpile

Two contractors employed by UG Solutions spoke to the AP on condition of anonymity as they were revealing their employers’ internal operations.

U.S. contractors say live ammo used at Gaza aid distribution site

Democratic leader Hakeem Jeffries spoke for hours on the House floor about potential impacts of President Trump's "big, beautiful bill" that Republicans are looking to pass before July 4. Following debate, the House is set for a final vote on the massive budget bill.

House debates Trump's 'big, beautiful bill' ahead of final vote

CBS News political contributor Caroline Polisi joins "CBS Mornings" to break down the jury's verdict in Sean "Diddy" Combs' federal trial and the judge's decision to deny bail for the music mogul ahead of his sentencing.

Manhattan

Sean "Diddy" Combs denied bail after split verdict

Liverpool soccer player Diogo Jota has died aged 28, just weeks after marrying his childhood sweetheart. The footballer passed away in a car crash in northern Spain.

Madrid

Liverpool soccer player dies in car crash 10 days after wedding

The Pentagon said that U.S. strikes 10 days ago had degraded Iran's nuclear program by up to two years, suggesting the U.S. military operation likely achieved its goals despite a far more cautious initial assessment that leaked to the public.

Tehran

Iran Strikes

Iran nuclear program degraded by up to two years: Pentagon

Days before his 90th birthday, the Dalai Lama announced the Gaden Phodrang Trust, a non-profit he founded, will have the sole authority to recognize his future reincarnation, but China insists it will choose the successor of the Tibetan spiritual leader.

Lhasa

China rejects Dalai Lama’s succession plan

The U.S. Congress inched towards approving President Donald Trump’s Big Beautiful Bill, despite attempts by Democrats to stop it. The bill is Trump’s signature legislation which includes massive spending increases on the military and immigration enforcement while slashing social programs.

Trump’s Big Beautiful Bill nears approval

Sean (Diddy) Combs was found guilty on prostitution-related charges, but was acquitted on more serious charges of racketeering and sex trafficking giving him a maximum sentence of 20 years. But the courtroom victory was subdued following a judge’s ruling to deny him bail.

New York

Diddy denied bail, avoids life in prison

President Trump says Israel has agreed to a 60-day ceasefire in Gaza, but it remains unclear if Hamas will accept the terms. CBS News senior foreign correspondent Debora Patta has more.

Trump says Israel has agreed to Gaza ceasefire conditions

Bryan Kohberger changed his plea to guilty Wednesday for the 2022 murders of four University of Idaho students. CBS News national correspondent Carter Evans has more on the case.

Boise

New details revealed as Kohberger pleads guilty for 2022 Idaho murders

The Wisconsin Supreme Court struck down a state abortion law that was adopted in 1849 in a 4-3 landmark decision. CBS News' Shanelle Kaul reports.

Madison

Wisconsin Supreme Court strikes down 176-year-old state abortion ban

Macron and Putin held regular discussions around the start of Russia's invasion of Ukraine, with Macron visiting Putin in Russia in February 2022, but dialogue eventually stalled.

Paris

Macron held 'substantial' phone call with Putin

President Trump toured “Alligator Alcatraz,” a migrant detention center he teamed up with Ron DeSantis to build in the Everglades.

Everglades

Protesters gather around ‘Alligator Alcatraz’ as President Trump visits

Jurors in Sean “Diddy” Combs’ federal criminal trial said they have reached a verdict on four of the five counts, but they cannot reach a verdict on Count 1, which is racketeering conspiracy. The judge has instructed the jury to keep deliberating. Deliberations will resume Wednesday (July 2).

Jury reaches partial verdict in Sean "Diddy" Combs case

The U.S. Senate passed the Republicans' reconciliation bill on Tuesday (July 1) after more than 24 hours of marathon voting on amendments. Vice President JD Vance cast the tie-breaking vote.

See The Full Story

Climate Crisis