Philadelphia: A massive explosion has rocked one of America's biggest oil refineries shaking buildings several kilometres away. Witnesses say they thought a nuclear bomb had gone off when a fireball erupted at the plant. 7NEWS.com.au Kristian Gaupset #7NEWS

Pittwater: A barge carrying a truck has overturned with its load plunging into the water, sending those onboard diving to safety. 7NEWS.com.au Kristian Gaupset #Pittwater #7NEWS

Italy's Stromboli volcano off the coast of Sicily has erupted again, pushing lava and ash into the air for the second time in two months. 7news.link/IGO6VX Kristian Gaupset #7NEWS

The secret diary of a young Holocaust victim is being published more than 70 years after she was killed. For decades, Renia Spiegel's family was too heartbroken to read her journal as it lay untouched in a bank vault. Kristian Gaupset #7NEWS

Oakhurst: Police are on the hunt for a gunman, who opened fire on a home on Simms Road. Five people were inside at the time, including two teenagers and it is the second time the home has been targeted, this year. 7news.link/TVrOh2 Kristian Gaupset #Oakhurst #7NEWS

Nearly three decades after she first set sail, HMAS Melbourne has been farewelled at a decommissioning ceremony this morning. From the Middle East to the South Pacific, her speed and power has kept our nation secure. 7NEWS.com.au Kristian Gaupset #HMASMelbourne #7NEWS

AMERICAN HERO!

If the idea of a four day working week sounds appealing, we have some good news: the concept appears to be catching on. From small businesses to blue chip corporates, employers are lining up to give it a try. 7news.link/35Aana Kristian Gaupset #7NEWS

They are the machines that kill coronavirus - massive filters that strip the disease right out of the air. They are already being used in the US and now there are calls to bring them here. 7NEWS.com.au Kristian Gaupset #7NEWS

Home buyers are flooding Western Sydney, the northern suburbs and Central Coast, ditching the inner city for more space in the suburbs. 7NEWS.com.au Kristian Gaupset #7NEWS

Mental health issues among Australian workers have spiked during the coronavirus pandemic with many employers reporting a jump in cases of anxiety among staff. But there is help with trained professionals just a phone call away. 7NEWS.com.au Kristian Gaupset #7NEWS

Preparing for final exams is hard enough in any normal year, but 2020 has presented year 12 students with so many new challenges. Now schools are stepping up, finding ways to ensure students stay calm and focused. 7NEWS.com.au Kristian Gaupset #7NEWS

Fears of an ancient curse have prompted an extravagant production in Egypt. No expense was spared for the ‘March of the Mummies’ as the great pharaohs were paraded through Cairo en route to their new museum home. 7NEWS at 6pm | 7NEWS.com.au #7NEWS

Well done Italy 🇮🇹

Police have just completed a Sydney-wide crackdown on violent crime and weapons possession. Hundreds of officers flooded the streets over the past two days, swooping on alleged criminals with sometimes heated results. youtu.be/UvYnJRRI40g #Sydney #7NEWS

In a sobering reminder that the COVID-19 pandemic is far from over, the highly infectious Delta strain now covers most of the globe. While it's more transmissible, Delta and other COVID variants can still be stopped by vaccines. youtu.be/TnnpvY4pRww #7NEWS

It's been a looming fixture over Sydney's skyline since the 1960s. But, after more than 5 decades, the Willoughby TV tower is being dismantled. It's an impressive operation. Taking down what was once dubbed the Eiffel Tower of the lower north shore. youtu.be/hDg0UvEhbUs #7NEWS

A really important cause… now more than ever

.Ausgrid has joined forces with a new tech start-up to bring free electric vehicle chargers to a suburb near you. The rollout has just begun with the energy supplier re-purposing existing parts of its network to future proof the city. youtu.be/AeSwN-CrLFc #7NEWS

Hear me out… proximity chat for cars Elon Musk