Schools brief

What is consciousness?

The hard problem

The final brief in our series looks at the most profound scientific mystery of all: the one that defines what it means to be human

Why does time pass?

The moving finger writes

In our fifth brief on scientific mysteries we ask why travelling through time, unlike travelling through space, is irreversible

What caused the Cambrian explosion?

The other Big Bang

In the fourth of our series of articles on scientific mysteries we ask why, a mere 542m years ago, animal life suddenly took off

Of what is the universe really made?

To the dark side

In the third of our briefs on scientific mysteries we ask just what it is that makes up 95% of the cosmos

Is the universe alone?

Multiversal truths

In our second brief on scientific mysteries, we ask whether the world might make more sense if other universes existed

How did biology begin?

Life story

In the first of a series of six briefs looking at unsolved scientific mysteries we ask how living things got going and whether they exist elsewhere than Earth

Making banks safe

Calling to accounts

The final article in our series on the financial crisis examines the best way to make banks safer without killing lending

Stimulus v austerity

Sovereign doubts

The fourth in our series of articles on the financial crisis looks at the surge in public debt it prompted, and the debate about how quickly governments should cut back

Monetary policy after the crash

Controlling interest

The third of our series of articles on the financial crisis looks at the unconventional methods central bankers have adopted to stimulate growth in its wake

The dangers of debt

Lending weight

The second in our series of articles on the financial crisis looks at the role debt and deleveraging have played in the turmoil

The origins of the financial crisis

Crash course

The effects of the financial crisis are still being felt, five years on. This article, the first of a series of five on the lessons of the upheaval, looks at its causes