Marathon data show gender patterns

Women display far higher variance in pace than men

Sport England urges women to be active

Campaigns aim to encourage female participation in sport

US and China: rivals with common cause

The future of the relationship is not predetermined but for the leaders to shape, writes Kevin Rudd

The battle over the US minimum wage

Protests demonstrate gathering pace in the fight for a $15 pay rate

Drought dooms Californian dreams

Drought threatens the fragile paradise of Los Angeles, writes Edwin Heathcote

Obama’s climate change legacy at risk

Oklahoma attorney-general fights White House on role of EPA

Lack of education stifles US mobility

School system fails to equip poorer children with basic skills

Marco Rubio’s strengths and weaknesses

Youth a help and hindrance for Hispanic US presidential contender

Study says low wages cost US $153bn a year

More than half of all fast-food workers rely on public assistance

Spieth ties record score to win Masters

Texan cards a 70 to complete 18-under total, holding off Mickelson and Rose

Clinton launches run for the White House

Former secretary of state fires gun on campaign for US presidency

Baseball takes fresh look at Rose saga

Game’s chief promises to take lifetime ban under consideration

Walter Scott’s life should have mattered

Casual brutality displayed by policeman supports the complaints of many black Americans

US and Cuba in highest level talks in 50 years

US secretary of state John Kerry and Cuban foreign minister Bruno Rodriguez meet

Tsarnaev found guilty in Boston bombings

Jury still to decide whether to impose death penalty

Paul tests appeal of libertarian message

Republican pitches himself as outsider in presidential bid

Rand Paul pins presidency hopes on youth

Senator campaigns for ‘liberty and limited government’

Americas summit marks region’s change

But more decisive than US-Cuba talks is the end of commodity boom

Clinton campaigns for underdog status

Democrat careful to avoid past mis-steps in the critical state of Iowa

Emerging markets challenge US might

After two decades on the global stage, little has been achieved