Life expectancy has increased in a spectacular fashion over the past 150 years. There has been a four-decade increase in average length of life over the period since 1850. World life expectancy has more than doubled, from about 25 years to around 65 years for men and 70 years for women. [TM089, or search for “thatsmaths” at irishtimes.com].

## Posts Tagged 'biology'

### The Inexorable Rise in Life Expectancy

Published April 21, 2016 Irish Times Leave a CommentTags: biology

### Biomathematics: the New Frontier

Published August 21, 2014 Irish Times Leave a CommentTags: biology

Mathematics is coming to Life in a Big Way. This week’s *That’s Maths* in *The Irish Times* (TM051, or Search for “thatsmaths” at irishtimes.com) is about the increasing importance of mathematics in the biological sciences.

### Sunflowers and Fibonacci: Models of Efficiency

Published June 5, 2014 Irish Times 2 CommentsTags: Algorithms, Applied Maths, biology, modelling

The article in this week’s *That’s Maths* column in *The Irish Times* ( TM046 ) is about the maths behind the efficient packing of sunflowers and many other plants

Strolling along Baggot Street in Dublin recently, I noticed a plaque at the entrance to the Ibec head office. It showed a circular pattern of dots, reminiscent of the head of a sunflower. According to the Ibec website, “The spiral motif brings dynamism … and hints at Ibec’s member-centric ethos.” Wonderful! In fact, the pattern in the logo is vastly more interesting than this. Continue reading ‘Sunflowers and Fibonacci: Models of Efficiency’

### Predator-Prey Models

Published May 8, 2014 Occasional Leave a CommentTags: Analysis, Applied Maths, biology

Next week’s post will be about a model of the future of civilization! It is based on the classical predator-prey model, which is reviewed here.

How do leopards get their spots? Mathematics gives us a better answer than the one offered by Rudyard Kipling in *Just So Stories*. This is the topic of *That’s Maths* this week ( TM019 ).