A team from the Institute for Advanced Study, Emory University in the US, and the Weizmann Institute of Science, Israel, has developed a new mathematical framework to understand how humans store ...

Humans can remember various types of information, including facts, dates, events and even intricate narratives. Understanding how meaningful stories are stored in people's memory has been a key ...

Let b be an integer greater than 1 and let Wε=(Wn ε;n≥ 0) be a random walk on the b-ary rooted tree Ub, starting at the root, going up (resp. down) with probability 1/2 + ε (resp. 1/2 - ε), ε ∈ (0, ...

Every year, from early autumn through midwinter, our giant sycamore drops a steady blizzard of brown. Thousands of leaves the size of saucers fall from the sycamore’s limbs, burying the lawn so deeply ...

We study the range Rn of a random walk on the d-dimensional lattice ℤd indexed by a random tree with n vertices. Under the assumption that the random walk is centered and has finite fourth moments, we ...

Researchers build the world’s largest evolutionary tree and conclude that species arise because of chance mutations — not natural selection. Honeycreepers, small birds inhabiting the Hawaiian Islands, ...