With rhino populations dwindling — now down to 27,000 globally — and South Africa losing about 500 rhinos a year to poaching, researchers hope this high-tech deterrent will tilt the odds in favor of conservation.

Johannesburg

South African scientists have introduced a new anti-poaching measure by injecting rhino horns with small amounts of radioactive material. This initiative, which began with five rhinos, is designed to make the horns easily detectable at border crossings using existing radiation detectors, thereby hindering illegal trafficking.

Possession of radioactive material is a serious crime in South Africa, so poachers caught with treated horns could face harsher penalties in addition to wildlife trafficking charges. The procedure is also less invasive and more cost-effective than traditional dehorning, requiring treatment only once every five years. With rhino populations declining and poaching rates high, researchers hope this method will strengthen conservation efforts.

Rhino horns injected with radioactive material to combat poaching

In a bold move to combat poaching, South African scientists have begun injecting rhino wounds with small amounts of radioactive material, a method they say is harmless to the animals but could be a game-changer in stopping illegal trafficking. The research project launched the initiative Thursday, injecting five rhinos as part of a wider roll-out. We've developed the use of radioisotopes to devalue rhino horns, so you're using radioactive material, small quantities of it, inserted into the horn of a rhino, which is like then putting a massive bright light into the horn that no one can turn off. It stays there and as it goes across borders the detectors are in place that can pick it up and it's then, you know, because as we said earlier, you know, those detectors have been installed for other reasons but just as capable of picking up the rhino horn as they are smuggled nuclear material. In South Africa, possession of radioactive material is considered a crime against the state, meaning poachers could face even harsher penalties in addition to wildlife trafficking charges. The situation is, in South Africa, if you're caught in possession of radioactive material, it's defined as a crime against the state, so theoretically it can open up the possibility of the person being charged with that sort of offence as well as wildlife trafficking offences, so you're just kind of ramping up the reward-risk ratio in the favour of us. Unlike traditional dehorning, which must be repeated, over 18 to 24 months, the radioactive procedure needs to be done only once every five years. Whilst dehorning needs to be done every 18 to 24 months, this only needs to be done every five years and also because the procedure is so quick and simple, firstly, the animal is under less stress and duress, secondly, it actually costs much less in terms of veterinary costs and drugs, and then because you only need to treat every five years, it ultimately saves money for the rhino owners because they're so brave looking after these animals and continuing to be their custodians and reserves, etc. So we're trying to help and just up the ante a bit in the anti-poaching game. With rhino population dwindling, now down to 27,000 globally, and South Africa losing about 500 rhinos a year to poaching, researchers hope this high-tech deterrent would tilt the odds in favour of conservation.

U.S. President Donald Trump said on Monday that Kyiv and Moscow will both have to cede land to end the war in Ukraine and talks with Russian President Vladimir Putin this week will instantly show whether the Kremlin leader is willing to make a deal.

Washington

Ukraine Invasion

Trump says both sides in Ukraine war will need to cede territory

A prominent Al Jazeera journalist, who had previously been threatened by Israel, was killed along with four colleagues and another journalist in an Israeli airstrike in an attack condemned by journalists and rights groups.

Jerusalem

Middle East Conflict

Israeli strike kills Al Jazeera journalists in Gaza

At last one person is dead, dozens are injured and two people are unaccounted for after an explosion at the U.S. Steel Clairton plant in Pennsylvania on Monday.

Clairton

At least 1 dead, dozens injured in U.S. Steel plant explosion

President Donald Trump has placed the Metropolitan Police Department under federal control and announced he's activating the National Guard to combat crime in Washington, D.C.

Trump deploying National Guard to Washington, D.C.

Ukrainian President Volodymyr Zelenskyy is thanking European leaders for backing his push to join this week's Trump-Putin summit in Alaska, insisting an end to the war must be fair.

Alaska

Trump and Putin set to meet on Friday without Zelenskyy

U.S. President Donald Trump and Russian President Vladimir Putin are scheduled to meet in Alaska on Friday to discuss ending the war in Ukraine. Kyiv and its allies fear being sidelined and worry any deal could reward Moscow’s occupation of Ukrainian territory.

Kyiv

Ukraine fights for a seat at the table ahead of Trump-Putin summit

Israeli Prime Minister Benjamin Netanyahu is defending his decision to keep fighting in Gaza, despite protests at home and abroad. Debora Patta has the latest.

Tel Aviv-Yafo

Netanyahu defends plan to expand war in Gaza

Ukrainian President Volodymyr Zelenskyy is thanking European leaders for backing his push to join this week's Trump-Putin summit in Alaska, insisting an end to the war must be fair. Willie James Inman has more from the White House.

Anchorage

Countdown begins to Trump-Putin meeting, without Zelenskyy

Violent weather hit several Midwest states over the weekend, with high winds being blamed for the death of at least one person in Nebraska and flash flooding prompting a state of emergency in Milwaukee County, Wisconsin.

Milwaukee

Milwaukee inundated with floodwaters, one dead in Nebraska

Thirty-seven major wildfires are currently burning across nine states in the western United States. Firefighters have made significant progress on the Canyon Fire in California, achieving 62% containment and allowing over 4,000 residents to return home, with minimal property loss reported.

Major fires continue to burn across western U.S.

President Donald Trump's envoy met with the Qatari prime minister on Saturday in Spain to discuss possible deals to end the Israel-Hamas war in Gaza, as Israel's military plans to expand into Gaza City. Meanwhile, families of Israeli hostages and Palestinians alike are pleading for peace.

Families of Israeli hostages, Palestinians plead for ceasefire

Renewed anti-government protests have taken place in Israel, where relatives and supporters of Israeli hostages held by Hamas demanded their release and an end to the brutal war Israel has been waging in Gaza.

Israeli anti-government protesters take to the streets in Tel Aviv

Ukraine's President Volodymyr Zelenskiy said that Kyiv "values and fully supports" a joint statement by European leaders that welcomed U.S. President Donald Trump's efforts to try to end the war, while emphasizing the need to pressure Russia and provide security guarantees for Kyiv.

Europe stresses need to protect Ukraine ahead of Trump-Putin meet

Ukrainian President Zelenskyy has firmly rejected Russia’s proposal requiring land concessions to end the war. Ukrainian and European officials have submitted a counterproposal to Washington.

Ukraine, Europe counter Russian ceasefire proposal ahead of US talks

There have been more protests, and counter protests, in several British towns and cities, outside of hotels used to accommodate asylum seekers. Some far-right protesters called for one of the hotels to stop housing migrants.

Bournemouth

UK: Anti-immigration & anti-racism protesters face off

A man who opened fire on the U.S. Centers for Disease Control and Prevention headquarters in Atlanta, firing into the complex from a pharmacy and killing a police officer, blamed the COVID-19 vaccine for making him depressed and suicidal, according to reports.

Atlanta

Vaccine conspiracy could be behind Atlanta shooting

The Gifford Fire burning through the rugged backcountry of California's Central Coast is now the state's largest wildfire of the year. It has reached so-called "mega-fire" status and is one of 38 large fires burning across nine states.

San Luis Obispo

Largest California wildfire of 2025 reaches "mega fire" status

President Trump is preparing to take another swing at a deal with President Putin during a high-stakes summit next Friday in Anchorage, Alaska. Ukraine President Volodymyr Zelenskyy says the country will never give up land, even if it means an end to the war.

Trump: Ukraine must cede land for ceasefire; Zelenskyy refuses

The United Nations Security Council is set to hold a rare Sunday meeting to discuss Israel's plan to intensify its 22-month war with Hamas by taking control of Gaza City. CBS News' Debora Patta reports on the conflict and the mounting humanitarian crisis.

Netanyahu's plan to occupy Gaza comes under fire

At least 200 protesters have been arrested at a rally showing solidarity for Palestinians in Gaza, outside the Parliament in London. Crowds are also demonstrating against a ban on the Palestine Action group, after it was designated as a terrorist organisation.

London

London:  Hundreds arrested during Palestine action protest

After almost four decades of a bloody conflict that until recently had no end in sight, Azerbaijan and Armenia signed a peace agreement in the presence of the US President Donald Trump. Notably absent in this historic moment is Russia, which no longer plays a central role in the South Caucasus.

Azerbaijan and Armenia sign historic agreement

Montana's governor said that the dayslong manhunt for the suspect in a bar shooting has ended. 45-year-old Michael Brown was taken into custody on Friday.

Anaconda

Montana bar shooting suspect captured after weeklong manhunt

President Trump announced Friday that he will hold a one-on-one meeting with Russian President Vladimir Putin on Aug. 15 in Alaska. The summit comes as Russia has been pushing to keep all the Ukrainian territory it gained from its invasion. Nancy Cordes and Margaret Brennan have the latest.

Trump, Putin to hold meeting in Alaska next week

The U.S. Department of Justice issued subpoenas in its investigation into New York Attorney General Letitia James. CBS News' Jake Rosen reports.

New York

Trump's DOJ subpoenas New York AG Letitia James

Vladimir Putin and Donald Trump will meet in the coming days, the Kremlin said on Thursday (August 7), as the U.S. president seeks a breakthrough to end the Ukraine war after voicing mounting frustration with his Russian counterpart and threatening him with new sanctions.

Moscow

Kremlin says Trump, Putin to meet soon; Ukraine seeks role for Europe

U.S. President Donald Trump's rushed deadline for Russia to strike a ceasefire deal or face more sanctions has arrived without much movement from Russian President Vladimir Putin.

Trump deadline for Russia to reach ceasefire arrives

Protesters in Israel are voicing their concerns about a plan approved by Prime Minister Benjamin Netanyahu's Security Cabinet to take over Gaza City. CBS News' Debora Patta has more.

Israel's security cabinet approves plan to take over Gaza City

Israeli Prime Minister Benjamin Netanyahu says Israel intends to take full military control of Gaza and push a new offensive, despite mounting international criticism over the war’s human toll and growing hunger crisis.

Breakdown