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Today you\u2019ll learn about how ancient Roman concrete can heal itself, the recent discovery of a virovore, and how a new study looks into whether or not we can control feelings of guilt through the placebo effect.   

Roman Concrete Magic   

• \u201cScientists may have found magic ingredient behind ancient Rome\u2019s self-healing concrete\u201d by Jacklin Kwan  
• \u201cWhy modern mortar crumbles, but Roman concrete lasts millennia\u201d by ZAHRA AHMAD  

Virovore   

• \u201cFirst "virovore" discovered: An organism that eats viruses\u201d By Michael Irving  
• \u201cThe consumption of viruses returns energy to food chains\u201d by John P. DeLong et al.  

Placebo Guilt  

• \u201cPlacebos reduce feelings of guilt \u2013 even when people know they\u2019re taking one\u201d by Jeremy Howick  
• \u201cDeceptive and open-label placebo effects in experimentally induced guilt: a randomized controlled trial in healthy subjects\u201d by Dilan Sezer, Cosima Locher & Jens Gaab  

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