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MIT explains the science behind petrichor, the earthy scent released when rain falls on dry soil. To wit:

MIT researchers observed that when a raindrop hits a surface, it traps tiny air bubbles at the point of contact. As in a glass of champagne, the bubbles then shoot upward, ultimately bursting from the drop in a fizz of aerosols. The researchers suspect that in natural environments, aerosols may carry aromatic elements, along with bacteria and viruses stored in soil. These aerosols may be released during light or moderate rainfall, and then spread via gusts of wind.

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MORE to folly.

Covers to braodsheet@broadsheet.ie

Thanks Garrett Rowe (Irish Times); Dermot Ahern (Irish Examiner); Meliosa Fitzgibbon (Irish Daily Mail); Aran Brazil (Irish Sun); Colm Heaney (Irish Mirror); Neil Henderson (UK papers); Patrick Conboy (The Longford Leader).

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What you may need to know:

1. A former special forces soldier suffering from PTSD tries to reconnect with an old flame but is instead forced on an around the world trip to try to clear his name.

2. The world is seemingly full of highly trained madmen with specific sets of skills.

3. It’s from Dr. Frankenstein himself Pierre Morel. There are no Hollywood corpses he cannot inject life into.

4. It’s an adaptation of the best selling crime novel ‘The Prone Gunman’ by Jean-Patrick Manchette.

5. Sean Penn says calling The Gunman an ‘action film’ is “kind of like calling Meryl Streep a sexy blonde chick She is. But that really doesn’t tell the story of what she is at all.” Um.

6. Broadsheet Prognosis: Penn is mightier than the sword.

Release Date: March 20

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Oh.

A convoy of cabs in the Phoenix Park, Dublin heading fora city centre protest this afternoon .

The demonstration is in response to proposed changes to fare structures that will see fares rise by an average of 4%.

The National Transport Authority will also change the number of pricing bands and drivers say “the cost of re-calibrating and re-sealing their meters – up to €250 – is not worth the increase in fares”.

As they’ll tell you yourself if you ask them.

(Sam Boal/Photocall ireland)

Broadsheet.ie