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Lung cancer remains the most frequently diagnosed cancer globally, with 2.5 million new cases, representing 12.4% of all cancer diagnoses. Firstpost consults leading experts to shed light on the causes, risks and preventive measures.

Delhi's air quality has been oscillating between 'severe' to 'severe-plus' categories for the past few days. There has also been a rise in cases of 'walking pneumonia', a mild case of pneumonia that results in swelling of the airways and accumulation of mucus in the lungs' air sacs. Though the condition isn't serious, severe pollution has exacerbated its symptoms among patients

Union officials are being "denied entry" to take dust measurements in worksites, according to ACTU Assistant Secretary Liam O'Brien. "This is really shocking that employees would be denying the rights of workers to have their representatives there to actually, independently validate dust levels," Mr O'Brien told Sky News Australia. "We recognise that in some of these environments like tunnelling, like quarrying, like construction and building trades more broadly, that you can't eliminate risks like we can with engineered stone. "The reality is, clearly we need stronger laws here."

UK environment secretary calls on business and finance to make meaningful investment in nature-based solutions

Australian Academy of Science points to over-reliance on volunteers and says more regular surveys needed

Pre-loved homeware is fun to find, kinder for the environment - and can save you a small fortune. From carrying a measuring tape to discovering websites way beyond eBay, here is everything you need to know

Nutritionist Lovneet Batra says that reducing exposure to polluted air is the most important thing.

As Air Quality Index levels surge past 400, exposure to severe toxic smog poses serious health hazards, causing eye irritation, headaches, severe breathlessness, and respiratory complications. Dr. Manoj Sharma, Senior Consultant of Internal Medicine at Fortis Hospital Vasant Kunj, warns that prolonged exposure to high pollution manifests beyond the lungs, triggering asthma or bronchial spasms.

Exposure to heavily polluted air can lead to respiratory issues. Within hours, it can cause coughing, wheezing, a scratchy throat, burning or watery eyes, and shortness of breath.

India pays for toxic air every year, through lost wages, hospital bills and slower growth, writes Dr. Sabine Kapasi.